Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| adenosine diphosphate glucose-glycogen transglucosylase in arthrobacter sp. nrrl b 1973. | 1964 | 14205498 | |
| microbial degradation of isopropyl-n-3 -chlorophenylcarbamate and 2-chloroethyl-n-3-chlorophenylcarbamate. | microbial degradation of isopropyl-n-3-chlorophenylcarbamate (cipc) and 2-chloroethyl-n-3-chlorophenylcarbamate (cepc) was observed in a soil perfusion system. degradation in perfused soils, and by pure cultures of effective bacterial isolates, was demonstrated by the production of 3-chloroaniline and the subsequent liberation of free chloride ion. identified isolates effective in degrading and utilizing cipc as a sole source of carbon included pseudomonas striata chester, a flavobacterium sp., ... | 1965 | 14325285 |
| the stimulation of free radical formation in arthrobacter sp. by manganous ions. | 1965 | 4285355 | |
| the isolation and characterization of glycogen from arthrobacter sp. nrrl b1973. | 1965 | 5320421 | |
| formation of 2,4-dichlorophenol and 2,4-dichloroanisole from 2,4-dichlorophen-oxyacetate by arthrobacter sp. | 1967 | 6035146 | |
| metabolism of 4-chloro-2-methylphenoxyacetic acid by soil bacteria. | a microorganism capable of degrading 4-chloro-2-methylphenoxyacetic acid (mcpa) was isolated from soil and identified as flavobacterium peregrinum. all of the chlorine of mcpa was released as chloride, and the carboxyl-carbon was converted to volatile products by growing cultures of the bacterium, but a phenol accumulated in the medium. the phenol was identified as 4-chloro-2-methylphenol on the basis of its gas chromatographic and infrared characteristics. extracts of cells of f. peregrinum and ... | 1967 | 16349751 |
| 2,4-d metabolism: pathway of degradation of chlorocatechols by arthrobacter sp. | 1969 | 21428341 | |
| cometabolism of m-chlorobenzoate by an arthrobacter. | twenty isolates representing nine bacterial genera were obtained from enrichment cultures and were shown to cometabolize one or more of 22 substituted benzoates. one of the isolates, an arthrobacter sp., cometabolized m-chlorobenzoate to a product identified as 4-chlorocatechol by thin-layer chromatography and ultraviolet and infrared spectroscopy. the data indicate that cometabolism by the arthrobacter results from the formation of products by its benzoate-oxiding enzyme system that are not act ... | 1970 | 5480101 |
| -glutamyl-glutamic acid, an interpeptide bridge in the murein of some micrococci and arthrobacter sp. | 1971 | 4256044 | |
| bacterial carotenoids. 38. c 50 -carotenoids. 9. isolation of decaprenoxanthin mono- and diglucoside from an arthrobacter sp. | 1972 | 4635696 | |
| mechanism of nitrification by arthrobacter sp. | resting cells of arthrobacter sp. excrete as much as 60 mug of hydroxylamine-nitrogen per ml when supplied with ammonium. an organic carbon source in abundant supply is necessary for the oxidation. resting cells oxidize hydroxylamine to nitrite and 1-nitrosoethanol, the former accumulating only when an exogenous carbon source is available. cell-free extracts contain an enzyme catalyzing the formation of hydroxylamine from acetohydroxamic acid, a hydroxylamine-nitrite oxido-reductase, and an enzy ... | 1972 | 5030624 |
| heterotrophic nitrifiction by arthrobacter sp. | arthrobacter sp. isolated from sewage oxidized ammonium to hydroxylamine, a bound hydroxylamine compound, a hydroxamic acid, a substance presumed to be a primary nitro compound, nitrite, and nitrate. the concentration of free hydroxylamine-nitrogen reached 15 mug/ml. the identification of hydroxylamine was verified by mass spectrometric analysis of its benzophenone oxime derivative. the bound hydroxylamine was tentatively identified as 1-nitrosoethanol on the basis of its mass spectrum, chemical ... | 1972 | 5030623 |
| glucose utilization dependence on preferred carbon-source growth in an arthrobacter sp. | 1973 | 4700353 | |
| deactivation of rg seed dressing by arthrobacter sp. 2b. | 1973 | 4701337 | |
| 2,4-dichlorophenoxyacetate metabolism by arthrobacter sp.: accumulation of a chlorobutenolide. | an enzyme preparation from 2,4-dichlorophenoxyacetate-grown arthrobacter sp. converted cis,cis-2,4-dichloromuconate to chloromaleylacetate. the enzyme lactonizing the dichloromuconate to yield 2-chloro-4-carboxymethylene but-2-enolide was separated from the butenolide-delactonizing enzyme. | 1973 | 4751794 |
| microbial decomposition of alpha-picoline. | an organism, which degrades alpha-picoline but also utilizes 2-ethylpyridine or piperidine as alternative growth substrates, has been isolated from soil and characterized as arthrobacter sp. alpha-picoline-grown cells oxidize 2-ethylpyridine and vice versa. other pyridine derivatives tested are neither utilized as growth substrates nor oxidized by the organism. alpha-picolinate and 2-hydroxy-6-methylpyridine are not metabolized, indicating that degradation is neither initiated by methyl oxidatio ... | 1974 | 4157133 |
| oxidative degradation of squalene by arthrobacter species. | an organism isolated from soil and identified as arthrobacter sp. was studied for its squalene degradation. the degradation product from squalene, which accumulated in the culture broth, was isolated and identified as trans-geranylacetone by mass spectrometry, gas chromatography, infrared spectrometry, and nuclear magnetic resonance spectrometry. addition of a high concentration of k2hpo4 to the culture medium resulted in accumulation of fairly large amounts of carboxylic acids in addition to ge ... | 1975 | 1115507 |
| pyrrolidine metabolism and its regulation in arthrobacter sp. | 1975 | 1221030 | |
| transformation of morphine by resting cells and cell-free systems of arthrobacter sp. | morphine can be transformed into 14-hydroxymorphine and a related unidentified material by resting cells of an arthrobacter species. cell-free extracts containing the transforming enzyme(s) have been obtained. o2, fe2+, and reduced nicotinamide adenine dinucleotide stimulate the transformation. | 1975 | 240309 |
| the fine structure of the branched alpha-d-glucan from the blue-green alga anacystis nidulans: comparison with other bacterial glycogens and phytoglycogen. | the fine structure of the glycogen from the blue-green alga anacystis nidulans has been examined. after selective hydrolysis of all (1 yields 6)-alpha-d linkages by a bacterial isoamylase, the resulting mixture of linear chains was subjected to gel permeation chromatography. for purposes of comparison, the glycogens from escherichia coli and arthrobacter sp., amylopectin, phytoglycogen from sweet corn, and shell-fish glycogen were treated similarly. the profiles of the unit chains of a nidulans ... | 1975 | 806344 |
| the microbial metabolism of acetophenone. metabolism of acetophenone and some chloroacetophenones by an arthrobacter species. | 1. an organism that utilizes acetophenone as sole source of carbon and energy was isolated in pure culture and tentatively identified as an arthrobacter sp. 2. cell-free extracts of the acetophenone-grown organism contained an enzyme, acetophenone oxygenase, that catalysed an nadph-dependent consumption of o(2) in the presence of the growth substrate; approx. 1mol of o(2) and 1mol of nadph were consumed per mol of acetophenone oxidized. 3. cell-free extracts also contained an enzyme capable of t ... | 1975 | 4061 |
| [degradation of 4-chlorobenzoic acid by an arthrobacter species (author's transl)]. | an arthrobacter sp. growing on 4-chlorobenzoic acid as its sole source of carbon excretes 4-hydroxygenzoic acid and protocatechuic acid into the culture medium. protocatechuic acid is further attacked by "meta"-cleavage. during growth of the arthrobacter sp. on benzoic acid cis-cis muconic acid can be isolated from the medium, suggesting the involvement of the "ortho"-cleavage pathway. the enzymes both for the "meta"- and the "ortho"-cleavage pathway are inducible. | 1976 | 1015950 |
| 4-keto-gamma-carotene(beta, psi-caroten-4-one), the major pigment of an arthrobacter sp. | 1976 | 1000359 | |
| soybean flower-to-seed movement of epiphytic bacteria. | epiphytic tracer bacteris (a pseudomonas sp. and an arthrobacter sp.) from soybean buds were introduced into open flowers of greenhouse-grown soybean plants. of the 177 resulting pods cultured after surface disinfection, tracers were recovered from within 24. seed from two of these pods also carried tracers. | 1976 | 943220 |
| facultative wood-digesting bacteria from the hind-gut of the termite reticulitermes hesperus. | among the facultative bacteria capable of growth on mesquite wood which were isolated from the asceptically dissected hind-gut of the termite reticulitermes hesperus were two strains of bacillus cereus, one strain each of arthrobacter, alcaligenes and serratia, and a very small gram-negative fermentative rod. the b. cereus strains, the serratia marcescens strain and the arthrobacter sp. grew well on a mineral salts alpha-cellusose agar. one of the bacillus cereus strains and serratia marcescens ... | 1976 | 822127 |
| nitrification in histosols: a potential role for the heterotrophic nitrifier. | insufficient populations of nitrosomonas and nitrobacter were found in a pahokee muck soil (lithic medidaprit) to account for the nitrate concentration observed. to determine if heterotrophic nitrifiers could account for some of this discrepancy, a method was developed to measure the levels of heterotrophic nitrifiers in soil. a population of 4.1 x 10(5) arthrobacter per g of dry fallow soil, capable of producing nitrite and/or nitrate from reduced nitrogenous compounds, was observed. amendment ... | 1977 | 869537 |
| oxidation of linear terpenes and squalene variants by arthrobacter sp. | cells of arthrobacter sp. that had been isolated from soil were used to study oxidation of some linear terpenes and squalene variants. the cells oxidized geraniol, nerol, and farnesol to the corresponding aldehydes, with partial conversion of the geometrical isomerism of the alpha,beta-double bond. the squalene variant, squalene-2,3-oxide, was cleaved to 9,10-epoxygeranylacetone and geranylacetone. squalene-2,3-22,23-dioxide was cleaved to 9,10-epoxygeranylacetone. these products were optically ... | 1977 | 869527 |
| structural and immunochemical studies on d-arabino-d-mannans and d-mannans of mycobacterium tuberculosis and other mycobacterium species. | serologically active d-arabino-d-mannas ([alpha]d, +82 degrees approximately 89 degrees; ratio of d-arabinose to d-mannose, 1-2:1) were isolated from the soluble fraction of disintegrated cells of m. tuberculosis, m. smegmatis, and several other mycobacterium species. these arabinomannans had similar structures, consisting of alpha-(1 leads to 5)-linked d-arabinose residues and alpha-(1 leads to 6)-, and (1 leads to 2)-linked d-mannose residues. methylation and enzymic degradation studies using ... | 1977 | 413830 |
| new microbial growth factor. | a screening procedure was used to isolate from soil a penicillium sp., two bacterial isolates, and a streptomyces sp. that produced a new microbial growth factor. this factor was an absolute growth requirement for three soil bacteria. the penicillium sp. and one of the bacteria requiring the factor, an arthrobacter sp., were selected for more extensive study concerning the production and characteristics of the growth factor. it did not seem to be related to the siderochromes. it was not present ... | 1977 | 327929 |
| the catabolism of l-tyrosine by an arthrobacter sp. | an arthrobacter sp. metabolizes l-tyrosine by a pathway involving 3,4-dihydroxyphenylacetate as a key intermediate. p-hydroxyphenylpyruvate is formed from tyrosine by an amino-transferase specifically requiring alpha-ketoglutarate for activity, and is then converted to p-hydroxyphenylacetate by an oxidative decarboxylation. p-hydroxyphenylacetaldehyde is not an intermediate in the formation of p-hydroxyphenylacetate. extracts of the bacterium oxidize 3,4-dihydroxyphenylacetate to delta-carboxyme ... | 1977 | 20216 |
| effect of freezing and thawing on survival of three bacterial isolates from an arctic soil. | three isolates, a pseudomonas sp., bacillus sp., and arthrobacter sp., which had been isolated from a meadow soil at devon island, canada, were subjected to freezing and thawing at low rates under various conditions. when cells were frozen in sand or soil, survival was dependent on moisture level, storage time, and thaw rate. pseudomonas m216 was most susceptible to freeze-thaw damage under these conditions. arthrobacter m51 was the most resistant of the three isolates when frozen in sand or soi ... | 1978 | 747810 |
| effect of starvation on survival of three bacterial isolates from an arctic soil. | three isolates, a pseudomonas sp., a bacillus sp. and an arthrobacter sp., which had been isolated from a meadow soil at devon island, canada, were subjected to starvation under varying conditions. the viabilities of the three isolates during starvation for 30 days in a carbon-free medium was assessed after the organisms had been grown continuously at varying rates in carbon- and nitrogen-limited media at 5 and 15 degrees c. pseudomonas m216 was the most resistant to starvation stress, bacillus ... | 1978 | 747809 |
| growth characteristics of three bacterial isolates from an arctic soil. | three bacterial isolates, a pseudomonas sp., a bacillus sp., and an arthrobacter sp., commonly isolated from a hummocky sedge-moss meadow at devon island, n.w.t., canada, were selected for further taxonomic characterization and for a study of the effects of temperature and limiting carbon source on growth. pseudomonas m216 resembled p. putida and bacillus m153, b. carotarum. arthrobacter m51 had growth-factor requirements which were more complex than those of any named species of that genus. the ... | 1978 | 688099 |
| metabolism of di- and mono-n-butyl phthalate by soil bacteria. | di-n-butyl phthalate and other dialkyl phthalates are used as carbon sources by three nocardia sp. isolates; mono-n-butyl phthalate is used as a carbon source by an arthrobacter sp. isolate and a pseudomonas sp. isolate. the compounds were metabolized in these organisms by hydrolysis to the corresponding monoesters and free phthalic acid. phthalic acid was then metabolized via protocatechuic acid by 3,4-dioxygenative ring cleavage. | 1978 | 16345266 |
| effect of oxygen on batch and continuous cultures of a nitrogen-fixing arthrobacter sp. | growth, acetylene reduction, and respiration rate were studied in batch and continuous cultures of arthrobacter fluorescents at different oxygen partial pressures. the optimum po2 values for growth and acetylene reduction were 0.05 and 0.025 atm, respectively, but microorganisms can tolerate higher po2 values. the growth of cultures provided with combined nitrogen was dependent on oxygen availability, and strict anaerobic conditions did not support growth. acetylene reduction of a population gro ... | 1979 | 476551 |
| emulsifier of arthrobacter rag-1: isolation and emulsifying properties. | the oil-degrading arthrobacter sp. rag-1 produced an extracellular nondialyzable emulsifying agent when grown on hexadecane, ethanol, or acetate medium. the emulsifier was prepared by two procedures: (i) heptane extraction of the cell-free culture medium and (ii) precipitation with ammonium sulfate. a convenient assay was developed for measurement of emulsifier concentrations between 3 and 75 micrograms/ml. the rate of emulsion fromation was proportional to both hydrocarbon and emulsifier concen ... | 1979 | 36840 |
| [sulfur and iron cycling bacteria in low-sulfate meromictic lake kuznechikha]. | the hydrochemical characteristics, the composition of species and the localization of bacterial species involved in oxidation of sulfide and ferrous salts were studied in the meromictic lake kuznechikha with a low sulfate content in summer and in winter. the rate of bacterial sulfate reduction and the rates of bacterial and algal photosynthesis were determined using a radioisotope technique. the meromictic nature of the lake is due to the accumulation of ferrous salts (up to 212 mg/l fe2+) in th ... | 1980 | 6777648 |
| influence of methylheptenone and related phytoplankton norcarotenoids on heterotrophic aquatic bacteria. | certain norcarotenoids, which have recently been found as excretion products of freshwater cyanobacteria and algae, are potent inhibitors of different metabolic functions in heterotrophic bacteria. 6-methylhept-5-en-2-one showed the strongest effects and acted as a noncompetitive inhibitor of both glucose uptake and respiration by aquatic isolates of chromobacterium lividum and arthrobacter sp. inhibition of the heterotrophic potential of glucose uptake by 6-methylhept-5-en-2-one was characteriz ... | 1981 | 7214229 |
| inhibition of fusarium moniliforme var. subglutinans, the causal agent of pine pitch canker, by the soil bacterium arthrobacter sp. | a species of arthrobacter was recovered during culture of the causal organism of pitch canker of southern pines. fusarium moniliforme var. subglutinans (fms). arthrobacter is a relatively common soil bacterium and is lytic to several fungal pathogens in the soil. soil samples from two seed orchards with pitch canker and one from a healthy pine plantation all yielded arthrobacter. these isolates were evaluated for their ability to inhibit the growth of fms isolates from pitch canker tissue and fr ... | 1981 | 7214230 |
| effect of microorganisms on the phytotoxicity of herbicides. vi. modification of venzar activity by bacterial cultures. | interactions between two bacterial strains and venzar were compared. it was found that the mechanism of interactions is various and causes the modification of herbicide phytotoxicity. metabolites of bacillus subtilis 72 interfered with herbicide by affecting physiological processes in plant tissues and enhancing its inhibitory influence. arthrobacter sp. 18 strain decreased the phytoinhibitory effect of herbicide due to conjugation with the carrier from venzar. | 1981 | 6168180 |
| the effect of phytohormones produced by arthrobacter sp. on the phosphatase activity in plant roots. | phytohormonal activity (auxins, gibberellins, cytokinins) was tested in the supernatant of a culture of arthrobacter sp. crude extract of the phytohormonal fraction was used as substrate for the growth of lactuca sativa seedlings. treating with bacterial hormones resulted in an increased plant develop- ment. furthermore, a sharp increase of the acid phosphatase activity was observed in the roots. | 1981 | 7262713 |
| a sulfated polysaccharide produced by an arthrobacter species. | a new sulfated polysaccharide was isolated from the culture supernatant of a strain of arthrobacter sp. the polysaccharide purified with quaternary ammonium salts consists of d-galactose, d-glucose, sulfate, phosphorus, glucosamine, muramic acid, alanine, glutamic acid, glycine, and ll-diaminopimelic acid in a molar ratio of 56 : 9.0 : 68 : 6.4 : 2.0 : 1.1 : 2.1 : 1.0 : 1.2 : 1.2. the presence of the two amino sugars and four amino acids suggests that the polysaccharide, which is principally a g ... | 1982 | 6298190 |
| production of glutamic acid by an arthrobacter sp. i. identification and nutritional requirement in relation to glutamic acid production. | 1982 | 6188337 | |
| metabolism of cyclohexaneacetic acid and cyclohexanebutyric acid by arthrobacter sp. strain ca1. | a strain of arthrobacter was isolated by enrichment culture with cyclohexaneacetate as the sole source of carbon and grew with a doubling time of 4.2 h. in addition to growing with cyclohexaneacetate, the organism also grew with cyclohexanebutyrate at concentrations not above 0.05%, and with a variety of alicyclic ketones and alcohols. oxidation of cyclohexaneacetate proceeded through formation of the coenzyme a (coa) ester followed by initiation of a beta-oxidation cycle. beta-oxidation was blo ... | 1982 | 7076617 |
| involvement of plasmids in total degradation of chlorinated biphenyls. | acinetobacter sp. strain p6 has previously been reported to utilize biphenyl (bp) and chlorinated bps, with accumulation of corresponding chlorobenzoic acids. arthrobacter sp. strain m5 was isolated as a contaminant in the culture of acinetobacter sp. strain p6 growing on 4-chlorobiphenyl and showed properties similar to p6 in the degradation of chlorinated bps. both strains harbored an identical plasmid of 53.7 megadaltons. these strains spontaneously lost the ability to utilize bp and 4-chloro ... | 1982 | 6814360 |
| similarities in the induction of synthesis of a cell-surface polypeptide in arthrobacter sp. by near-uv irradiation and photodynamic conditions. | 1983 | 6856688 | |
| the sulfated polysaccharide-peptidoglycan complex from an arthrobacter species: characterization of the linkage between the two components. | further structural features of the sulfated polysaccharide-peptidoglycan complex, which is produced by an arthrobacter sp. and contains phosphorus as its minor component, were investigated. phosphoric acid esters such as d-glucose 6-phosphate, glycerol 1-phosphate and muramic acid phosphate were isolated from the acid hydrolysate of the complex. on mild acid treatment, the complex became positive for both the morgan-elson reaction and acid phosphatase digestion. the mild acid hydrolysate readily ... | 1983 | 6137481 |
| isolation of mannan-protein complexes from viable cells of saccharomyces cerevisiae x2180-1a wild type and saccharomyces cerevisiae x2180-1 a-5 mutant strains by the action of zymolyase-60,000. | the viable whole cells of saccharomyces cerevisiae x2180-1a wild type and its mannan mutant strain s. cerevisiae x2180-1a-5, were treated with an arthrobacter sp. beta-1,3-glucanase in the presence of a serine protease inhibitor, phenyl-methylsulfonyl fluoride. fractionation of the solubilized materials of each strain with cetavlon (cetyltrimethylammonium bromide) yielded one mannan-protein complex. molecular weights of these complexes were almost the same as that of the mannoprotein of the muta ... | 1983 | 6355061 |
| purification and properties of a nad-linked 1,2-propanediol dehydrogenase from propane-grown pseudomonas fluorescens nrrl b-1244. | nad-dependent 1,2-propanediol dehydrogenase (ec 1.1.1.4) activity was detected in cell-free crude extracts of various propane-grown bacteria. the enzyme activity was much lower in 1-propanol-grown cells than in propane-grown cells of pseudomonas fluorescens nrrl b-1244, indicating that the enzyme may be inducible by metabolites of propane subterminal oxidation. 1,2-propanediol dehydrogenase was purified from propane-grown ps. fluorescens nrrl b-1244. the purified enzyme fraction shows a single-p ... | 1983 | 6407398 |
| isolation of a bacterium capable of degrading peanut hull lignin. | thirty-seven bacterial strains capable of degrading peanut hull lignin were isolated by using four types of lignin preparations and hot-water-extracted peanut hulls. one of the isolates, tentatively identified as arthrobacter sp., was capable of utilizing all four lignin preparations as well as extracted peanut hulls as a sole source of carbon. the bacterium was also capable of degrading specifically labeled [c]lignin-labeled lignocellulose and [c]cellulose-labeled lignocellulose from the cordgr ... | 1983 | 16346424 |
| formation and identification of interfacial-active glycolipids from resting microbial cells. | resting cells of arthrobacter sp. strain dsm2567 incubated in the presence of various mono-, di-, or trisaccharides biosynthesized different glycolipids. all eight glycolipids, containing the corresponding carbohydrate moiety and one, two, or three alpha-branched beta-hydroxy fatty acids, were produced when mannose, glucose, cellobiose, maltose, and maltotriose were used as carbon sources in a simple phosphate buffer. the structures of the compounds were elucidated by means of h and c nuclear ma ... | 1984 | 16346628 |
| degradation of 4-chlorobenzoic acid by arthrobacter sp. | a mixed population, enriched and established in a defined medium, from a sewage sludge inoculum was capable of complete mineralization of 4-chlorobenzoate. an organism, identified as arthrobacter sp., was isolated from the consortium and shown to be capable of utilizing 4-chlorobenzoate as the sole carbon and energy source in pure culture. this organism (strain tm-1), dehalogenated 4-chlorobenzoate as the initial step in the degradative pathway. the product, 4-hydroxybenzoate, was further metabo ... | 1984 | 16346660 |
| immunochemical properties of mannan-protein complex isolated from viable cells of saccharomyces cerevisiae 4484-24d-1 mutant strain by the action of zymolyase. | viable cells of saccharomyces cerevisiae 4484-24d-1 mutant strain were treated with an arthrobacter sp. beta-1,3-glucanase, zymolyase-60,000, in the presence of a serine protease inhibitor, phenylmethylsulfonyl fluoride. fractionation of the solubilized materials with cetavlon (cetyltrimethylammonium bromide) yielded a purified mannan-protein complex, which had a molecular weight of ca. 150,000, approximately three times higher than that of the mannan isolated from the same cells by the hot-wate ... | 1984 | 6398395 |
| interaction between bacterial metabolites and some pesticides. ii. change of phytotoxicity of the herbicide roneet by the phenolic metabolites of arthrobacter sp. | the bacteria from arthrobacter genus isolated from sugar beet rhizosphere were found to produce gallic, protocatechuic, p-hydroxybenzoic, syryngic, vanillic, veratric acids, p-quinone and two unidentified phenolic compounds. the mixture of the bacterial phenolic compounds increased the phytotoxicity of roneet, inhibiting the germination of wheat. model experiments showed that the phenolic acids used with the herbicide roneet increased its phytotoxicity and p-hydroxybenzoic acid was found to be t ... | 1984 | 6209927 |
| the origin of the oxygen incorporated during the dehalogenation/hydroxylation of 4-chlorobenzoate by an arthrobacter sp. | an arthrobacter sp. has been shown to dehalogenate 4-chlorobenzoate yielding 4-hydroxybenzoate. experiments with 18o indicate that, in the presence of cell-free extracts, the hydroxyl group which is substituted onto the aromatic nucleus during dehalogenation is derived from water and not from molecular oxygen. dehalogenation therefore is not catalysed by a mixed-function oxidase; instead a novel aromatic hydroxylase is implicated in the reaction. | 1984 | 6497895 |
| an erythromycin-resistance gene from an erythromycin-producing strain of arthrobacter sp. | a gene (erma) coding for a presumed erythromycin-resistance (err) determinant from an er-producing arthrobacter sp. strain (nrrlb3381) was isolated from a gene bank in phage vector lambda 2001 by probing with a streptomyces err gene. strongly hybridizing fragments were subcloned and the appropriate segments sequenced. the erma gene is 76 mol% g + c in content and specifies a protein of 340 aa with an mr of 37454. s1 nuclease mapping and primer extension identified the putative promoter, which re ... | 1985 | 4043733 |
| production and characterization of a polymer from arthrobacter sp. | an arthrobacter sp. isolated from a glucose-sucrose agar plate was found to produce a neutral, extremely viscous, opalescent extracellular polymer. growth, polymer production, and rheological properties and chemical composition of the isolated polymer were examined. the polymer was found to be substantially different from other arthrobacter polymers. some unusual properties included irreversible loss of viscosity with high temperature and degradation of the polymer during fermentation and upon s ... | 1985 | 16346883 |
| purification and characterization of benzonitrilases from arthrobacter sp. strain j-1. | we found two kinds of benzonitrilases, designated benzonitrilases a and b, in a cell extract of arthrobacter sp. strain j-1 grown on benzonitrile as a sole carbon and nitrogen source. benzonitrilases a and b were purified approximately 409-fold and 38-fold, respectively. purified benzonitrilase a appeared to be homogeneous according to the criteria of polyacrylamide gel electrophoresis. both the enzymes hydrolyzed benzonitrile to benzoic acid and ammonia without forming benzamide as an intermedi ... | 1986 | 16346987 |
| initial reactions of xanthone biodegradation by an arthrobacter sp. | this study examined the catabolism of xanthone by an arthrobacter sp. (strain gfb100) capable of growth on xanthone as its main source of carbon and energy. an early catabolic intermediate was 3,4-dihydroxyxanthone. this compound was isolated from the growth medium of a mutant strain of the arthrobacter sp. which lacked the xanthone-inducible dihydroxyxanthone ring-fission dioxygenase of the wild-type strain. cell extracts from wild-type xanthone-grown cells oxidized 3,4-dihydroxyxanthone to a y ... | 1986 | 3745120 |
| cloning and expression in escherichia coli of the gene for an arthrobacter beta-(1----3)-glucanase. | when inserted in the correct orientation at the bamhi site of plasmid yrp7, an 8.6-kilobase bamhi fragment of arthrobacter sp. strain ycwd3 dna gave escherichia coli hb101 cells harboring the recombinant plasmid pbx20 the ability to lyse bakers' yeast cell walls or bakers' yeast glucan in agar medium. an extract of the transformed e. coli cells contained an endo-beta-(1----3)-glucanase with the same activity pattern as that of glucanase i produced by arthrobacter sp. strain ycwd3. although part ... | 1986 | 3096974 |
| enzymes of vitamin b6 degradation. purification and properties of 5-pyridoxic-acid oxygenase from arthrobacter sp. | 5-pyridoxic-acid oxygenase, a cytoplasmic enzyme formed when arthrobacter cr-7 is grown with pyridoxine as a sole source of carbon and nitrogen, was purified about 190-fold to homogeneity from fully induced cells. the enzyme catalyzes reaction a, (formula: see text) the essential ring-opening step in the degradation of pyridoxine, and provides a second example of an fad-dependent oxygenase that adds both two hydrogen and two oxygen atoms to its substrate. 5-pyridoxic-acid oxygenase has an isoele ... | 1986 | 3771566 |
| metabolism of glyphosate in an arthrobacter sp. glp-1. | the metabolism of glyphosate [n-(phosphonomethyl)glycine] in a bacterium tentatively identified as an arthrobacter sp., capable of growth on this herbicide as its sole phosphorus source, has been investigated using solid-state nmr techniques as well as radiotracer analysis. the pathway involves the conversion of glyphosate to glycine, a c1 unit and phosphate. the phosphonomethyl carbon is specifically incorporated into the amino acids serine, cysteine, methionine, and histidine, as well as into ... | 1987 | 2439330 |
| transformation of arthrobacter and studies on the transcription of the arthrobacter erma gene in streptomyces lividans and escherichia coli. | we report the development of a plasmid-mediated transformation system for arthrobacter sp. nrrlb3381, using the streptomyces cloning vector pij702. our procedure gives a transformation frequency of 10(3)/micrograms of plasmid dna. in addition we have explored the expression of the arthrobacter erma gene in streptomyces lividans and escherichia coli, and shown that the erma promoter is recognized in s. lividans not e. coli. the relationship between arthrobacter, streptomyces and e. coli promoters ... | 1987 | 2443127 |
| structural characteristics of the corynebacterium lilium bacteriophage cl31. | bacteriophage cl31 was isolated on a corynebacterium lilium strain. out of 30 strains tested, only cl31 was able to form plaques on corynebacterium glutamicum atcc 13287, brevibacterium lactofermentum atcc 21086, and arthrobacter sp. strain si55, but at a very low frequency. this phage belongs to group b of bradley's classification (d. e. bradley, bacteriol. rev. 31:230-314; 1967). its head is 53 nm in diameter, and its tail is 396 nm in length. the phage capsid contains three major proteins, of ... | 1987 | 3033280 |
| microbial desulfonation of substituted naphthalenesulfonic acids and benzenesulfonic acids. | sulfur-limited batch enrichment cultures containing one of nine multisubstituted naphthalenesulfonates and an inoculum from sewage yielded several taxa of bacteria which could quantitatively utilize 19 sulfonated aromatic compounds as the sole sulfur source for growth. growth yields were about 4 kg of protein per mol of sulfur. specific degradation rates were about 4 to 14 mu kat/kg of protein. a pseudomonas sp., an arthrobacter sp., and an unidentified bacterium were examined. each desulfonated ... | 1987 | 3662502 |
| isolation and characterization of an s-ethyl-n,n-dipropylthiocarbamate-degrading arthrobacter strain and evidence for plasmid-associated s-ethyl-n,n-dipropylthiocarbamate degradation. | arthrobacter sp. strain te1 isolated from s-ethyl-n,n-dipropylthiocarbamate (eptc)-exposed soil degraded this herbicide effectively and could grow on eptc as the sole carbon source. te1 harboured four plasmids of 65.5, 60, 50.5, and 2.5 megadaltons. spontaneous mutants unable to degrade eptc arose at a high frequency, and this was further increased by treatment of the culture with acridine orange or incubation at high temperature. all eptc degradation-deficient (e-) mutants lacked the 50.5-megad ... | 1987 | 3606092 |
| characterization of 1-chlorohexane halidohydrolase, a dehalogenase of wide substrate range from an arthrobacter sp. | 1-chlorohexane halidohydrolase from arthrobacter sp. strain ha1 was purified to homogeneity by fractional precipitation, ion-exchange chromatography, gel filtration, and high-performance liquid chromatography gel filtration. the enzyme was a monomer with a molecular weight of about 37,000; its amino acid composition and n-terminal sequence were determined. the enzyme had a broad optimum around ph 9.5, a temperature optimum near 50 degrees c, an activation energy of 40 kj/mol, and a molecular act ... | 1987 | 3667524 |
| activation of the human complement cascade by bacterial cell walls, peptidoglycans, water-soluble peptidoglycan components, and synthetic muramylpeptides--studies on active components and structural requirements. | cell walls isolated from 29 strains of 24 gram-positive bacterial species, whose peptidoglycans belong to the group a type of schleifer and kandler's classification, with one exception (arthrobacter sp.), were shown to activate the complement cascade in pooled fresh human serum mainly through the alternative pathway and partly through the classical one. the complement-activating effect of cell walls (5 species) possessing group b type peptidoglycan, except those of corynebacterium insidiosum, wa ... | 1987 | 3670125 |
| uptake of glyphosate by an arthrobacter sp. | the uptake of glyphosate (n-[phosphonomethyl]glycine) by an arthrobacter sp. which can utilize this herbicide as its sole source of phosphorus was investigated. orthophosphate suppressed the expression of the uptake system for glyphosate and also competed with glyphosate for uptake. the k(m) for glyphosate uptake was 125 mum, and the k(i) for orthophosphate was 24 mum. organophosphonates as well as organophosphates inhibited glyphosate uptake, but only organophosphates and orthophosphate suppres ... | 1987 | 16347356 |
| oxidative pathway from squalene to geranylacetone in arthrobacter sp. strain y-11. | the reaction pathway from squalene to trans-geranylacetone in arthrobacter sp. strain y-11 was studied. the enzyme or enzymes catalyzing squalene degradation were found to be membrane bound. stoichiometric analysis of a cell-free system revealed that the ratio of squalene to trans-geranylacetone changed from 1:2 to 1:1 as the reaction proceeded, indicating two steps in geranylacetone formation. the initial step was found to be oxygenase catalyzed, from the absolute requirement for molecular oxyg ... | 1988 | 16347551 |
| degradation of the phosphonate herbicide glyphosate by arthrobacter atrocyaneus atcc 13752. | of nine authentic arthrobacter strains tested, only a. atrocyaneus atcc 13752 was capable of using the herbicide glyphosate [n-(phosphonomethyl)glycine] as its sole source of phosphorus. contrary to the previously isolated arthrobacter sp. strain glp-1, which degrades glyphosate via sarcosine, a. atrocyaneus metabolized glyphosate to aminomethylphosphonic acid. the carbon of aminomethylphosphonic acid was entirely converted to co(2). this is the first report on glyphosate degradation by a bacter ... | 1988 | 16347639 |
| mineralization of carbofuran by a soil bacterium. | a bacterium, tentatively identified as an arthrobacter sp., was isolated from flooded soil that was incubated at 35 degrees c and repeatedly treated with carbofuran (2,3-dihydro-2,2-dimethyl-7-benzofuranyl n-methylcarbamate). this bacterium exhibited an exceptional capacity to completely mineralize the ring-labeled c in carbofuran to co(2) within 72 to 120 h in a mineral salts medium as a sole source of carbon and nitrogen under aerobic conditions. mineralization was more rapid at 35 degrees c t ... | 1988 | 16347722 |
| isolation and characterization of a mutant of arthrobacter sp. strain glp-1 which utilizes the herbicide glyphosate as its sole source of phosphorus and nitrogen. | arthrobacter sp. strain glp-1, grown on glucose as a carbon source, utilizes the herbicide glyphosate [n-(phosphonomethyl)glycine] as its sole source of phosphorus as well as its sole source of nitrogen. the mutant strain glp-1/nit-1 utilizes glyphosate as its sole source of nitrogen as well. in strain glp-1, p(i) was a potent competitive inhibitor of glyphosate uptake (k(i), 24 mum), while the affinity of p(i) for the uptake system of strain glp-1/nit-1 was reduced by 2 orders of magnitude (k(i ... | 1988 | 16347784 |
| asni: a novel class ii restriction endonuclease from arthrobacter sp., strain n-cm, recognizing 5'-at/taat-3'. | a new class ii restriction endonuclease, asni, with a novel sequence specificity was isolated from the gram-positive eubacterium arthrobacter species, strain n-cm. asni recognizes the unambiguously defined palindromic hexanucleotide (formula: see text) consisting of a- and t-residues. the novel enzyme in the presence of mg2+ cleaves specifically both strands as indicated by the arrows. the staggered cuts generate 5'-protruding ends with single-stranded 5'-ta-3' dinucleotide extensions. the novel ... | 1988 | 2841156 |
| enzymatic dehalogenation of 4-chlorobenzoate by extracts from arthrobacter sp. su dsm 20407. | in extracts from arthrobacter sp. su dsm 20407 an enzyme was detectable, that converted 4-chlorobenzoate into 4-hydroxybenzoate. this conversion was also observed when no oxygen was present in the reaction mixture. boiling for 5 min destroyed the enzyme activity. 4-bromo- and 4-iodobenzoate were substrates for the enzyme too, but not 4-fluorobenzoate, 4-chlorophenylacetate and 4-chlorocinnamic acid. the enzyme showed optimum activity at 16 degrees c and at ph 7-7.5. the specific activity in the ... | 1988 | 3223988 |
| three dehalogenases and physiological restraints in the biodegradation of haloalkanes by arthrobacter sp. strain ha1. | arthrobacter sp. strain ha1 utilizes 18 c2-to-c8 1-haloalkanes for growth and synthesizes an inducible 1-bromoalkane debrominase of unknown physiological function (r. scholtz, t. leisinger, f. suter, and a.m. cook, j. bacteriol. 169:5016-5021, 1987) in addition to an inducible 1-chlorohexane halidohydrolase which dehalogenates some 50 substrates, including alpha, omega-dihaloalkanes. alpha, omega-dihaloalkanes were utilized by cultures of strain ha1 under certain conditions only. c9 and c8 homol ... | 1988 | 3223767 |
| induction of a light-inducible gene in arthrobacter sp. by exposure of cells to chelating agents and ph 5. | transcription of a light-inducible gene in the prokaryote arthrobacter sp. is induced in the dark when cells are incubated with chelating agents or in medium at ph 5. however, repletion of metal ions such as ca2+, mn2+ or zn2+ or an increase in ph is required for accumulation of the gene product, an mr 21,000 polypeptide. but such changes in condition restore repression of the gene, and the decay in the rate of synthesis of the polypeptide follows the same time-course as when photodynamically in ... | 1988 | 3382667 |
| a host-vector system for an arthrobacter species. | an efficient host-vector system has been developed for an industrial strain of arthrobacter sp. (nrrl b3728)used for glucose isomerase production. protoplasts of arthrobacter were generated by treating the cells with 0.5 mg lysozyme ml(-1) for 60 min in a solution containing 0.5 m-sucrose. around 30% of the protoplasts regenerated on agar containing 0.5 m-sodium succinate as osmotic stabilizer. three hybrid vectors, pbl2100, pcg1100 and pcg2100, were constructed by combining the escherichia coli ... | 1988 | 2846755 |
| cometabolism of polychlorinated biphenyls: enhanced transformation of aroclor 1254 by growing bacterial cells. | acinetobacter sp. strain p6 and a soil isolate, arthrobacter sp. strain b1b, were tested for their ability to transform aroclor 1254 as washed resting cells and as growing cells with biphenyl as the substrate. growing cells were far superior to resting-cell suspensions in terms of total polychlorinated biphenyl (pcb) transformation, transformation of specific pcb congeners, and diversity of congeners that were attacked. growing cells of acinetobacter sp. strain p6 and arthrobacter sp. strain b1b ... | 1988 | 3140725 |
| a new nad+-dependent opine dehydrogenase from arthrobacter sp. strain 1c. | a new nad+-dependent opine dehydrogenase was purified to homogeneity from arthrobacter sp. strain 1c isolated from soil by an enrichment culture technique. the enzyme has a molecular weight of about 70,000 and consists of two identical subunits with molecular weights of about 36,000. the enzyme catalyzed a reversible oxidation-reduction reaction of opine-type secondary amine dicarboxylic acids. in the oxidative deamination reaction, the enzyme was active toward unusual opines, such as n-[1-r-(ca ... | 1989 | 2753861 |
| enzymatic dehalogenation of pentachlorophenol by extracts from arthrobacter sp. strain atcc 33790. | arthrobacter sp. strain atcc 33790 was grown with pentachlorophenol (pcp) as the sole source of carbon and energy. crude extracts, which were prepared by disruption of the bacteria with a french pressure cell, showed no dehalogenating activity with pcp as the substrate. after sucrose density ultracentrifugation of the crude extract at 145,000 x g, various layers were found in the gradient. one yellow layer showed enzymatic conversion of pcp. one chloride ion was released per molecule of pcp. the ... | 1989 | 2793827 |
| degradation of 4-chlorobenzoate by facultatively alkalophilic arthrobacter sp. strain sb8. | a facultative alkalophile capable of utilizing 4-chlorobenzoate (4-cba), strain sb8, was isolated from soil with an alkaline medium (ph 10.0) containing the haloaromatic compound as the carbon source. the strain, identified as an arthrobacter sp., showed rather extensive 4-cba-degrading ability. 4-cba utilization by the strain was possible in the alkaline medium containing up to 10 g of the compound per liter. the 4-cba-dechlorinating activity of resting cells was almost completely uninhibited b ... | 1989 | 16347854 |
| adhesion of an amylolytic arthrobacter sp. to starch-containing plastic films. | cells of the amylolytic bacterium kb-1 (thought to be an arthrobacter sp.) adhered ( approximately 70%) to the surface of plastic films composed of starch-poly (methylacrylate) graft copolymer (starch-pma), but did not adhere (<10%) to films composed of polymethylacrylate (pma), polyethylene (pe), carboxymethyl cellulose, or a mixture of pe plus poly (ethylene-coacrylic acid) (eaa), starch plus pe, or starch plus pe and eaa. about 30% of the cells adhered to gelatinized insoluble starch. dithiot ... | 1990 | 16348173 |
| nadh production from nad+ with a formate dehydrogenase system involving immobilized cells of a methylotrophic arthrobacter strain. | a convenient and economical method of nadh production from nad+ has been established using a formate dehydrogenase system involving immobilized cells of a methanol-utilizing bacterium. arthrobacter sp, km62. four kinds of cell entrapment were studied. an immobilized cell preparation showing a high nadh production activity was obtained by entrapment in a kappa-carrageenan gel lattice. the nadh-producing activity of the immobilized cells was investigated under various conditions. the nadh-producin ... | 1990 | 1366576 |
| production of l-tryptophan from d,l-5-indolylmethylhydantoin by resting cells of a mutant of arthrobacter species (dsm 3747). | the reaction parameters and the stereospecificity of the enzymatic cleavage of d,l-5-indolylmethylhydantoin in producing l-tryptophan with resting cells of arthrobacter sp. dsm 3747 were studied. when intact cells were tested, the optimal ph was between 8.5 and 9.0 and the optimal temperature was 50 degrees c. both, l-n-carbamoylase and hydantoinase could be stabilized over 24 h at 30 and 40 degrees c by the addition of d,l-5-indolylmethylhydantoin. furthermore, the hydantoinase was stable over ... | 1990 | 1366911 |
| cell growth and enzyme synthesis of a mutant of arthrobacter sp. (dsm 3747) used for the production of l-amino acids from d,l-5-monosubstituted hydantoins. | a microorganism with the ability to form l-tryptophan from d,l-5-(3-indolyl-methyl)hydantoin (d,l-5-imh) was isolated and identified as arthrobacter sp. (dsm 3747). after isolation of a mutant with high tryptophan production activity but low tryptophan degradation, cultural conditions were optimized to achieve high amounts of biomass with good specific activities concerning the enzymatic hydantoin-cleaving reactions. the ability of the microorganism to perform these bioconversions was found to b ... | 1990 | 1366910 |
| trimethyl lead degradation by free and immobilized cells of an arthrobacter sp. and by the wood decay fungus phaeolus schweinitzii. | the continuing production of leaded petrol generates liquid wastes containing recalcitrant trialkyl lead, for which no suitable chemical treatment has been formulated. this investigation explores the feasibility of using microorganisms to catalyse the rate-limiting step of trimethyl lead degradation to dialkyl lead; this disproportionates chemically to give, ultimately, pb2+ which is treatable by classical methods. an arthrobacter sp. and a wood decay macrofungus, phaeolus schweinitzii provide n ... | 1990 | 1366364 |
| purification and some properties of beta-fructofuranosidase i from arthrobacter sp. k-1. | arthrobacter sp. k-1, isolated from soil, produces beta-fructofuranosidase. this enzyme preparation was separated into three fractions (i, ii, and iii) by butyl-toyopearl 650 m column chromatography. the beta-fructofuranosidase i was purified to homogeneity by disc-electrophoresis after consecutive column chromatographies. the enzyme had a molecular weight of 52,000 by sds-polyacrylamide gel electrophoresis and 51,000 by gel filtration with ultrogel aca 44, and an isoelectric point of 4.3. the e ... | 1990 | 1368550 |
| microbial metabolism of quinoline and related compounds. vi. degradation of quinaldine by arthrobacter sp. | quinaldine catabolism was investigated with the bacterial strain arthrobacter sp., which is able to grow aerobically in a mineral salt medium with quinaldine as sole source of carbon, nitrogen and energy. the following degradation products of quinaldine were isolated from the culture fluid and identified: 1h-4-oxoquinaldine, n-acetylisatic acid, n-acetylanthranilic acid, anthranilic acid, 3-hydroxy-n-acetylanthranilic acid and catechol. 3-hydroxy-n-acetylanthranilic acid was not further metaboli ... | 1990 | 2076195 |
| chlorinated biphenyl mineralization by individual populations and consortia of freshwater bacteria. | comparative studies were performed to investigate the contribution of microbial consortia, individual microbial populations, and specific plasmids to chlorinated biphenyl biodegradation among microbial communities from a polychlorinated biphenyl-contaminated freshwater environment. a bacterial consortium, designated lps10, was shown to mineralize 4-chlorobiphenyl (4cb) and dehalogenate 4,4'-dichlorobiphenyl. the lps10 consortium involved three isolates: pseudomonas testosteroni (lps10a), which m ... | 1990 | 2117875 |
| an examination of proton translocation and energy conservation during heterotrophic nitrification. | whether selected heterotrophic nitrifiers, as do the autotrophs, conserve energy during the oxidation of their nitrogenous substrates was studied. the examination of proton translocation of four different bacterial nitrifiers capable of pyruvic oxime [(po), ch3-c(noh)-cooh] nitrification and by an nh4+ oxidizing arthrobacter sp. was initiated. three of the po nitrifying bacteria, all pseudomonads, oxidize hydroxylamine (nh2oh) at a greater rate than po and yielded only stoichiometric protons whe ... | 1990 | 2157622 |
| mechanism of enzymatic dehalogenation of pentachlorophenol by arthrobacter sp. strain atcc 33790. | pentachlorophenol (pcp) dehalogenase from arthrobacter sp. strain atcc 33790 converts pcp to tetrachlorohydroquinone. in labeling experiments with h(2)18o or 18o2, only with h(2)18o was labeled product found. however, unlabeled tetrachlorohydroquinone became labeled after incubation with the enzyme in h(2)18o. therefore, distinction between an oxygenolytic or a hydrolytic dehalogenation mechanism for the pcp dehalogenase is not possible. | 1990 | 2254286 |
| utilization of acrylonitrile by bacteria isolated from petrochemical waste waters. | a bacterium, utilising acrylonitrile as a sole source of carbon and nitrogen, was isolated from indian petrochemical corporation limited (ipcl) waste waters and identified as arthrobacter sp. this strain could also utilize acetonitrile, acetamide and acrylamide individually as a source of carbon and nitrogen. the metabolic studies with the whole cells indicated the sequential conversion of the nitrile to the respective amide and then to the respective acid and ammonia. the rate of nitrile hydrol ... | 1990 | 2279769 |
| molecular cloning and nucleotide sequencing of the arthrobacter dextranase gene and its expression in escherichia coli and streptococcus sanguis. | a bacterial strain, which assimilated dextran and water-insoluble glucan produced by streptococcus mutans, was isolated from soil. the bacterium produced and secreted potent dextranase activity, which was identified as arthrobacter sp. and named cb-8. the dextranase was purified and some enzymatic properties were characterized. the enzyme efficiently decomposed the water-insoluble glucan as well as dextran. a gene library from the bacteria was constructed with escherichia coli, using plasmid puc ... | 1991 | 1859672 |
| marine biosurfactants, i. screening for biosurfactants among crude oil degrading marine microorganisms from the north sea. | three bacterial strains of marine origin were isolated during a screening for biosurfactants among n-alkane degrading microorganisms. one strain-identified as alcaligenes sp. mm1-produced a novel glucose lipid. in the case of arthrobacter sp. ek 1 the well-known trehalose tetraester was found as major component. from another pure culture classified as arthrobacter sp. si 1, extracellular emulsifying agents with properties indicating high molecular weight substances were detected. furthermore tre ... | 1991 | 1878106 |
| marine biosurfactants, ii. production and characterization of an anionic trehalose tetraester from the marine bacterium arthrobacter sp. ek 1. | within a screening for biosurfactants we could isolate various n-alkanes utilizing marine bacteria which were capable of synthesizing glycolipids. one strain was identified as arthrobacter sp. ek 1 which produced trehalose lipids. after purification by column and thick layer chromatography the main fraction, an anionic 2,3,4,2'-trehalose tetraester, was obtained. the chain lengths of fatty acids ranged from 8 up to 14, furthermore succinate could be detected. since the place of substitution of s ... | 1991 | 1878107 |
| description of the erythromycin-producing bacterium arthrobacter sp. strain nrrl b-3381 as aeromicrobium erythreum gen. nov., sp. nov. | arthrobacter sp. strain nrrl b-3381t (t = type strain) is a nonmycelial, nonsporulating actinomycete that produces the macrolide antibiotic erythromycin. this bacterium differs in many ways from the type species of the genus arthrobacter (arthrobacter globiformis), suggesting that a taxonomic revision is appropriate. the g + c content of strain nrrl b-3381t dna is 71 to 73 mol%, and the peptidoglycan of this organism contains ll-diaminopimelic acid. evolutionary distance data obtained from 16s r ... | 1991 | 1883712 |
| experimental apparatus for selection of adherent microorganisms under stringent growth conditions. | a bioreactor apparatus is described for studying bacterial attachment. a cyclic, on-off, flow regime was imposed within the apparatus. model calculations illustrate the utility of this flow pattern in the selection and maintenance of slow-growing, adherent organisms. the apparatus is believed to have general utility in testing bacterial attachment influenced by many types of experimental or environmental constraints, including variations in fluid dynamics, presence of toxic substances (metals or ... | 1991 | 1892388 |
| substrate interactions of benzene, toluene, and para-xylene during microbial degradation by pure cultures and mixed culture aquifer slurries. | benzene, toluene, and p-xylene (btx) were degraded by indigenous mixed cultures in sandy aquifer material and by two pure cultures isolated from the same site. although btx compounds have a similar chemical structure, the fate of individual btx compounds differed when the compounds were fed to each pure culture and mixed culture aquifer slurries. the identification of substrate interactions aided the understanding of this behavior. beneficial substrate interactions included enhanced degradation ... | 1991 | 1746958 |
| 3,4-dihydroxyxanthone dioxygenase from arthrobacter sp. strain gfb100. | bacterial extradiol ring-fission dioxygenases play a critical role in the transformation of multiring aromatic compounds to more readily biodegradable aromatic or aliphatic intermediates. arthrobacter sp. strain gfb100 utilizes an extradiol meta-fission dioxygenase, 3,4-dihydroxyxanthone dioxygenase (dhxd), in the catabolism of the three-ring oxygen heterocyclic compound xanthone. in this paper, we show that dhxd is a cytosolic enzyme, induced by growth on xanthone and maximally expressed during ... | 1991 | 1768091 |