Publications

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effect of oxidation on the transition of penicillinase conformation. 19715001985
[action of phospholipase c on diol phospholipids]. 19715001986
occurrence of lysophosphatides in bacteriophage t4rii-infected escherichia coli s-6.hydrolysis of phospholipids was observed to start about 15 min after escherichia coli s/6 cells were infected with t4rii bacteriophage mutants. hydrolysis continued through the latent period and well past the time when cell lysis occurs. the hydrolytic products that accumulated were free fatty acids, 2-acyl lysophosphatidylethanolamine, and various lysocardiolipins. these products indicated the action of phospholipase a(1). from 15 to 22 min after infection, there were equivalent amounts of fatt ...19715002011
phospholipase c from pseudomonas fluorescens. 19715002152
[determination of the degree of adhesion of microbial cells to solid surfaces]. 19715002169
uranyl salts as fixatives for electron microscopy. study of the membrane ultrastructure and phospholipid loss in bacilli. 19715000342
comparison of bacillus cereus bacteriophages cp-51 and cp-53.transducing bacteriophages cp-51 and cp-53 were compared. unlike cp-51, cp-53 appeared to be a lysogenizing phage. cp-51 gave greater frequencies of co-transduction for linked markers than did cp-53. cp-51 was found to be a larger phage which carried more deoxyribonucleic acid (dna) than cp-53. cp-51 dna contained about 43% guanine plus cytosine and in addition contained 5-hydroxymethyluracil in place of thymine. cp-53 dna contained no unusual bases; its guanine plus cytosine content was 37%.19715000543
the interconvertibility of various bacterial transfer ribonucleic acids between an active and an inactive stable configuration. 19715000606
the role of the histidine side chains in the catalytic activity of b. cereus expopenicillinase. 19715000681
autolysis of bacillus cereus cell walls and isolation of structural components.autolysis of bacillus cereus n.r.r.l. 569 cell walls was accompanied by hydrolysis of the majority of the 4-o-beta-n-acetylglucosaminyl-n-acetylmuramic acid linkages in mucopeptide, presumably by an endo-beta-n-acetylglucosaminidase. hydrolysis of the n-acetylmuramyl-l-alanine linkages by an amidase also occurred. free d-alanine residues were detected in isolated cell walls and the proportion of these residues increased during autolysis, presumably due to d-alanine carboxypeptidase action. fract ...19715000275
dielectric study of the physical state of electrolytes and water within bacillus cereus spores.dielectric measurements revealed that dormant spores of bacillus cereus have extremely low conductivities at high frequencies (50 mhz) and so must contain remarkably low concentrations of mobile ions both within the core and in the surrounding integuments. activation, germination, and outgrowth were all accompanied by increases in conductivity of the cells and their suspending medium, and this result indicated that intracellular electrolytes had become ionized and leaked from the spores. high-fr ...19714998245
spore refractility in variants of bacillus cereus treated with actinomycin d.refractility as indicated by light microscopy, electron microscopy of thin sections, and freeze fracture etching was increased and maintained in a cortexless mutant, a(-)1, of bacillus cereus var. alesti by the addition during sporulation stage 4 of actinomycin d, which prevents the terminal lysis of spore core associated with sporulation in this organism. (45)calcium uptake levels and dipicolinic acid (dpa) content were similarly maintained. the location of these components appears to be in the ...19714998247
use of cryptograms for characterization of strains of the bacillus thuringiensis-bacillus cereus group. 19715575752
the antimicrobial activity of citral. 19715002370
bacillus cereus neutral protease. 19715002444
the interrelation of polar lipids in bacterial membranes. 19715002559
lung tissue and serum levels of methacycline. 19715002640
inhibition of growth and rna biosynthesis of bacillus cereus by quinacrine. 19715002781
the "sensitivity" of resting and dividing cells. 19715002845
[mechanism of regulation of alpha-acetohydroxyacid-synthetase in bacillus cereus t]. 19715002914
effects of fluorouracil on rna synthesis in bacillus cereus. 19715002954
changes induced in the ultrastructure of the cytoplasmic and intracytoplasmic membranes of several gram-positive bacteria by variations in oso 4 fixation. 19715003136
[experimental data on the study of the stability of streptotricin antibiotics phytobacteriomycin and polymycin]. 19715003153
the interrelation of phosphatidylethanolamine and glycosyl diglycerides in bacterial membranes. 19715003473
circular-dichroism studies on two -lactamases from bacillus cereus.the circular-dichroism (cd) spectra of beta-lactamases i and ii from bacillus cereus 569/h are reported, along with that of the beta-lactamase ii free from carbohydrate. the results show that carbohydrate makes an appreciable contribution to the optical activity of beta-lactamase ii in the far-ultraviolet, and that removal of carbohydrate greatly affects the optical activity of several aromatic side chains of the protein moiety. both tyrosyl and tryptophanyl residues are affected, showing that s ...19715003529
bacteria and actinomycetes antagonistic to fungal root pathogens in australian soils. 19715003563
[formation and determination of nitric oxide in sterile, canned spinach]. 19715004938
irreversible adsorption of exopenicillinase on bacillus cereus 569 cells. 19715005043
[research on the dissociating activity of some constituents of vitreous humor]. 19715005105
[comparative study of bacillus cereus sporogenesis in stable, running, and stable-running microcultures]. 19715005136
purification and specificity of a lytic enzyme isolated from b. cereus. 19715005194
[effect of entobacterine-3 and biotrol-183 on laspeyresia pomonella l. catterpillars]. 19715005233
[adsorption of bacteria on glass, modified glass surfaces and polymer films]. 19715005572
preparation and purification of microbial proteases with special reference to the bacilli. 19715005723
drug dependence and phenotypic masking in gram positive and gram negative bacteria. 19715005839
regulation of extracellular protease production in bacillus cereus t: characterization of mutants producing altered amounts of protease.twenty-nine mutants of bacillus cereus t were selected on casein agar for their inability to produce large amounts of extracellular protease. they all formed spores, and 27 were also auxotrophs for purines or pyrimidines. upon reversion to prototrophy, a large fraction regained the capacity to produce protease. conversely, reversion to normal protease production resulted in loss of the purine or pyrimidine requirement in a large fraction of the revertants. one spontaneous low-protease-producing ...19714104235
paracrystalline sheets reaggregated from solubilized exosporium of bacillus cereus.fragments of exosporium, isolated from dormant spores of bacillus cereus, were disintegrated by treatment with sodium dodecyl sulfate (sds) or with phenol and acetic acid. after centrifugation of each preparation, proteins in the supernatant fractions were resolved by disc gel electrophoresis into either two or eight bands, respectively. the sds-solubilized fraction contained spheroidal particles 11 to 44 nm in diameter. when centrifuged until clear, this fraction after dialysis still gave rise ...19714105032
cell surface associated gamma globulins in lymphocytes. ii. the pluripotentiality of mouse spleen lymphocytes. 19714107653
thickened cell walls of bacillus cereus grown in the presence of chloramphenicol: their fate during cell growth. 19714110439
reverse immune cytoadherence. a technique for the detection of surface-associated -globulins on lymphoid cells. 19714116133
turnover of mucopeptide during the life cycle of bacillus megaterium. 19714256604
enzymatic deacetylation of n-acetylglucosamine residues in peptidoglycan from bacillus cereus cell walls. 19714256847
[bacilli in marine environment: study of 120 strains]. 19714263376
enumeration and identification of bacillus cereus in foods. i. 24-hour presumptive test medium.an egg yolk-polymyxin medium (kg) for rapid enumeration of bacillus cereus is described. the test is presumptive in that differentiation of b. cereus (and closely related organisms) from other species is based on the formation of turbidity in the agar surrounding the colonies of the cereus group organisms. the medium is formulated to encourage sporulation and release of free spores for serological confirmatory tests within the 24-hr incubation period. the production of turbidity in egg yolk and ...19714331768
silica gel stimulates the hydrolysis of lecithin by phospholipase a. 19714331782
[spores of microorganisms. xxiv. effect of derivatives of basic antibiotic peptides on the postgerminative development of bacterial spores]. 19714336956
chemical nature of the inactivation of bacillus cereus penicillinase by iodine. 19714327042
effect of phospholipases and lipase on submitochondrial particles. 19714327197
sarcoplasmic reticulum. xi. the mode of involvement of phospholipids in the hydrolysis of atp by sarcoplasmic reticulum membranes. 19714328159
secondary structure of dna depends on base composition. 19714328209
effect of phospholipase c hydrolysis of membrane phospholipids on membranous enzymes. 19724337103
pathogenicity of bacillus cereus for insects. i. production of phospholipase c. 19724337758
pathogenicity of bacillus cereus for insects. ii. toxicity of phospholipase c for galleria mellonella. 19724337759
development of a membrane-bound resiratory system prior to and during sporulation in bacillus cereus and its relationship to membrane structure.bulk membrane fragments were prepared from cells of bacillus cereus atcc 4342 harvested at different stages of growth and sporulation and examined for enzymes involved in electron transport functions. the presence of succinate: dcpip oxidoreductase (ec 1.3.99.1), succinate: cytochrome c oxidoreductase (ec 1.3.2.1), nadh:dcpip oxidoreductase (ec 1.6.99.1), nadh:cytochrome c oxidoreductase (ec 1.6.2.1), succinate oxidase [succinate: (o(2)) oxidoreductase, ec 1.3.3.1], and nadh oxidase [nadh:(o(2)) ...19724337850
measurement of beta-lactamase activity and rate of inactivation of penicillins by a ph-stat alkalimetric titration method. 19724342044
[molecular thuricins and cerecins]. 19724344903
carbon monoxide production from heme compounds by bacteria.carbon monoxide formation from heme compounds by bacteria was investigated to study microbial hemoprotein catabolism with reference to heme degradation by mammalian tissues. hemolytic and nonhemolytic bacteria were incubated aerobically and anaerobically with the following substrates: erythrocytes, hemoglobin, myoglobin, cytochrome c, hematin, iron hematoporphyrin, copper hematoporphyrin, protoporphyrin, and bilirubin. after 18 hr at 37 c the evolved co was measured by gas chromatography. none o ...19724344922
fine structural studies on digestion of bacterial species in the rumen ciliate, entodinium caudatum. 19724345936
[microbiological analysis of dehydrated soups]. 19724346624
increased phospholipid depletion alters the apparent specificity of phospholipid-dependence of glucose 6-phosphatase activity. 19724347799
[viability of microorganisms in solonetz under plantings of sweet clover and wheat grass in the tselinograd district]. 19724265543
[newly discovered sugars in the specific polysaccharides of bacteria]. 19724208820
novel method for detection of beta-lactamases by using a chromogenic cephalosporin substrate.a new cephalosporin with a highly reactive beta-lactam ring was found to give an immediate color change in the presence of beta-lactamases from many bacteria, including staphylococci, bacillus species, enterobacteriaceae, and pseudomonas. the reaction is confined to organisms producing beta-lactamases, but it is sufficiently sensitive to indicate the presence of this enzyme is small amounts in strains previously considered not to produce it. the compound has an unusual ultraviolet spectrum, and ...19724208895
[peracute mastitis caused by bacillus cereus]. 19724199535
[the bacteriology of dehydrated vegetable products]. 19724199536
effect of aflatoxins on microorganisms. 19724197365
[toxic properties of the metabolites of some saprophytic bacteria]. 19724197401
time course of purine nucleoside phosphorylase occurrence in sporulation of bacillus cereus.purine nucleoside phosphorylase (ec 2.4.2.1) from bacillus cereus t was examined at hourly intervals during growth and sporulation. the enzyme has maximal activity in extracts prepared from cells during stages i and ii. the activity during exponential growth is only 6.6% of the maximum and that in free spores is only 3.3%. conservation of the purine nucleoside phosphorylase during sporulation is apparent as shown by the gradual increase in heat resistance.19724204910
isotopic study of control of the lysine biosynthetic pathway during sporulation of bacillus cereus.the extent of incorporation of aspartate into dipicolinic acid and into various amino compounds was determined in bacillus cereus at various times before, during, and near the end of synthesis of dipicolinic acid. the purpose of this study was to gain further information on the in vivo control of the biosynthesis of amino acids derived from aspartate. control of the lysine biosynthetic pathway was of particular interest with regard to sporulation, owing to the important role of diaminopimelate a ...19724204913
[fixation with tapo in ultrastructural study of bacterial cells. i. cell wall of bacillus cereus in ultra-thin sections]. 19724204943
improved procedures for the determination of oxytetracycline in milk, milk products; chicken muscle, liver; and eggs. 19724205446
simple photometric assay of beta-lactamase activity.a simple photometric assay of beta-lactamase activity was developed. the method is based on a decrease in optical density at 620 nm caused by the formation of a penicilloic acid-iodine complex. the enzymatic reaction is instantaneously stopped by the addition of a concentrated iodine-tungstate solution. data showing the time and concentration dependence of the reaction are presented. by varying both the time of the assay and the concentration of the enzyme, substrates of widely different v(max) ...19724207957
[toxic effect of warmed-up culture of bacillus cereus]. 19724210745
[toxic activity of the disintegrated bacillus cereus cell and endotoxin-like substances]. 19724210750
ultrastructural alterations induced by moist heat in bacillus cereus.the ultrastructural alterations induced in vegetative, exponentially growing bacillus cereus cells suspended in broth, by heating at 65 c for 2 and 15 min and 100 c for 5 min, were studied by electron microscopy of thin sections. the following alterations were observed: (i) change in the triple-layered profile of the membranes from the normal asymmetric to a symmetric geometry, appearance of fractures in the membranes, occurrence of prominent myelin-like systems of concentric membranes; (ii) dis ...19724116891
penicillin and cell wall synthesis: a study of bacillus cereus by electron microscopy.the changes in wall structure of a penicillinase micro-constitutive strain of bacillus cereus (569/h/24), on exposure to penicillin, and after its removal by addition of penicillinase, have suggested the following model for the growth of the walls of these cylindrical cells. longitudinal extension is by addition of material to a large and continuously increasing number of growing points uniformly distributed over the cylindrical surface. addition is only in the longitudinal direction so that the ...19724110923
enzymatic lysis in vitro of hyalin deposits in human kidney. 19724111563
immunosuppressive properties of a ribonuclease-containing fraction from bacterial cultures. 19724115966
[autolysis of bacterial cell surface and its physiology (biosynthesis)]. 19724143920
[study of the antibiotic activity of mycetes isolated from the soil of various regions of bulgaria. i]. 19724197602
[survival of some terrestrial microorganisms in space]. 19724198265
[the isoelectric point of extracellular proteases of certain bacterial species]. 19724200183
evaluation of the hill coefficient for allosteric inhibitors. 19724405114
efficacy of a fluorescent-antibody procedure for identifying bacillus cereus in foods.one hundred and seventeen strains of bacillus were examined by the fluorescent-antibody technique by using the globulin fraction of serum prepared against spores of b. cereus t. all but one strain of the 59 b. cereus tested fluoresced at the exosporium surface. fluorescent staining of b. anthracis, b. thuringiensis, and b. mycoides was also observed. absorption of the globulin fraction with b. anthracis and b. mycoides resulted in the elimination of staining of these organisms. absorption with b ...19724629698
positional preference of fatty acids in phospholipids of bacillus cereus and its relation to growth temperature. 19724629867
actions of 2-methyl-1,4-naphthoquinone in bacillus cereus. 19724630259
mode of tilorone hydrochloride interaction to dna and polydeoxyribonucleotides. 19724630460
the nutrition of bacillus megaterium and bacillus cereus. 19724630543
dna competition studies within the bacillus cereus group of bacilli. 19724630545
[antineoplastic agents. 48. microbial catabolites of the ethyl esters of n-( -(6-purinylithio)-valeryl)-glycine, -diglycine and triglycine and their corresponding acids]. 19724630559
microtitration of bacillus cereus hemolysin.a microtiter procedure for the quantitation of bacillus cereus hemolysin is described.19724631107
[alimentary toxinfection caused by bacillus cereus]. 19724631149
occurrence of n-nonsubstituted glucosamine residues in peptidoglycan of lysozyme-resistant cell walls from bacillus cereus. 19724631319
bacterial surface translocation: a survey and a classification. 19724631369
method for restricting incorporation of radioactivity from 3 h-thymidine into deoxyribonucleic acid only during outgrowth of spores of bacillus cereus t.when heat-activated spores of bacillus cereus t (thy(-)) were germinated and grown in medium containing (3)h-thymidine, a significant amount of radioactivity was incorporated into ribonucleic acid and deoxyribonucleic acid (dna). a method was developed to restrict the incorporation of radioactivity from (3)h-thymidine into dna only. this was accomplished by labeling the cells with (3)h-thymidine in the presence of 2 mg of 2-deoxyadenosine per ml, 250 mug each of uracil, cytosine, and guanosine p ...19724621680
nature of deoxyribonucleic acid synthesis and its relationship to protein synthesis during outgrowth of bacillus cereus t.deoxyribonucleic acid (dna) synthesis during early outgrowth of spores of bacillus cereus t (thy(-)) has been examined. (14)c-thymidine incorporated begins 2 to 5 min after germination and continues at a slow rate up to 30 min, after which the rate of (14)c-thymidine incorporation increases considerably. early dna synthesis up to 30 min after germination is dependent upon simultaneous protein synthesis. the examination of the stability of proteins synthesized soon after germination shows that th ...19724621681
the susceptibility of the eye gnat hippelates collusor to entomogenous bacteria and fungi. 19724621719
effects of volatile substances released by foliage of abies balsamea. 19724621720
studies on the synthesis of phosphoglycerides in escherichia coli. 19724621805
immunochemical investigations on spore fractions of b. cereus strains isolated from cases of food poisoning. 19724621954
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