the role of molybdenum in formation of the nadph-nitrate reductase by aspergillus nidulans. 19734144009
the multimeric nature of nadph-nitrate reductase from aspergillus nidulans. 19734144577
ammonium regulation in aspergillus nidulans.l-glutamate uptake, thiourea uptake, and methylammonium uptake and the intracellular ammonium concentration were measured in wild-type and mutant cells of aspergillus nidulans held in various concentrations of ammonium and urea. the levels of l-glutamate uptake, thiourea uptake, nitrate reductase, and hypoxanthine dehydrogenase activity are determined by the extracellular ammonium concentration. the level of methylammonium uptake is determined by the intracellular ammonium concentration. the upt ...19734145865
nad and nadp l-glutamate dehydrogenase activity and ammonium regulation in aspergillus nidulans. 19734148302
the genetic control of molybdoflavoproteins in aspergillus nidulans. ii. use of nadh dehydrogenase activity associated with xanthine dehydrogenase to investigate substrate and product inductions. 19734149466
the effects of carbon source on glutamate dehydrogenase activities in aspergillus nidulans. 19744150766
the effect of the carbon source on ammonium regulation in aspergillus nidulans. 19744150856
properties of the assimilatory nitrate reductase from aspergillus nidulans. 19744153024
the role of malic enzyme in aspergillus nidulans. 19744153143
coordinate regulation of enzyme inducibility and developmental competence in aspergillus nidulans. 19744156015
karyokinesis of the somatic nucleus of aspergillus nidulans. ii. nuclear events during hyphal differentiation. 19684180480
mitosis in aspergillus nidulans. 19694188529
the isolation of tyrosinase from aspergillus nidulans, its kinetic and molecular properties and some consideration of its activity in vivo. 19734198643
the neutral and alkaline proteases of aspergillus nidulans. 19734201327
effect of osmotic concentration and ph on sclerotia and cleistothecia production in alkaline and fertile soil aspergilli. 19734201565
precursor of 5s ribosomal ribonucleic acid in the blue-green alga anacystis nidulans.the maturation of 5s ribosomal ribonucleic acid (rrna) in the obligately photoautotrophic unicellular blue-green alga anacystis nidulans has been studied by using polyacrylamide gel electrophoresis and t1 ribonuclease oligonucleotide analysis. a. nidulans mature 5s rrna (m5) is of approximately the same molecular weight as the 5s rrna of escherichia coli, and is derived by cleavage of a precursor (p5) containing a few (three to six) additional nucleotides. some of these additional nucleotides oc ...19744204437
[the fibrinolytic and thrombolytic activity of the mold fungi of the genus aspergillus]. 19734205355
mutational analysis of dark endogenous metabolism in the blue-green bacterium anacystis nidulans.we describe a mutant (strain 704) of the obligate photoautotroph anacystis nidulans which behaves like the wild type under continuous illumination but which in the dark rapidly loses viability, respires little, and incorporates label into ribonucleic acid and protein at rates considerably less than observed with the darkened wild type. extracts of this mutant strain show no detectable 6-phosphogluconate dehydrogenase (ec activity. spontaneous revertants of mutant 704 were selected as s ...19744212183
the genetics of penicillium chrysogenum. 19734212418
rapid screening for the isolation of mutants of aspergillus nidulans with increased penicillin yields. 19744215785
fungal growth rate and the formation of ethylene in soil. 19744215868
induction of inter- and intragenic mitotic recombination by fluorodeoxyuridine and fluorouracil in aspergillus nidulans. 19674226822
the pinkish red pigment produced by an adenineless mutant of aspergillus nidulans. 19694245435
chemical induction of mitotic recombination in aspergillus nidulans. 19714254990
[on the frequency of aflatoxin and aspergillus in foods]. 19694259173
[mycotoxins produced by aspergillus. their action on the chick embryo]. 19694259296
spontaneous mutations in fungi. 19724265097
formation of hybrid anthranilate synthetase in vitro from components of aspergillus and neurospora. 19734269431
a study of the kinetics of hyphal extension and branch initiation of fungal mycelia. 19744274556
regulation of the pentose phosphate pathway in the fungus aspergillus nidulans. the effect of growth with nitrate. 19744274591
onychomycosis in elderly chiropody patients. 19744277596
physiological and biochemical studies of nuclear and extranuclear oligomycin-resistant mutants of aspergillus nidulans. 19744278766
adenosine triphosphatase of aspergillus nidulans: activation by calcium ion & inhibition of this effect by magnesium ion. 19744279888
molybdate metabolism in aspergillus nidulans. ii. mutations affecting phosphatase activity or galactose utilization. 19704319916
genetic and allied effects of certain esters of inorganic acids in aspergillus nidulans. 19714336682
conidiophore and spore development in aspergillus nidulans. 19724347343
[ultrastructure of the nucleus-associated body ("centriolar plaque", "mtoc", "kce") during interphase in the conidia of aspergillus nidulans]. 19744365430
the regulation of nad l-glutamate dehydrogenase in aspergillus nidulans. 19744366241
genetic control of the sensitivity of aspergillus nidulans to mutagenic factors. ii. the sensitivity of uvs mutants to different mutagenic factors. 19744367713
a new method for the preparation of uniformly 14c-labelled compounds by using anacystis nidulans.1. growth conditions were devised which enabled anacystis nidulans to be grown on high specific radioactivity (14)co(2) (at over 98% isotopic abundance of (14)c) in a closed system with greater than 85% substrate utilization. 2. the dna and rna content of a. nidulans was estimated by various methods and compared with that of chlorella pyrenoidosa. 3. a procedure was developed for the quantitative extraction and separation of the dna and rna from a. nidulans. 4. the fractionation and analysis of ...19744374187
mutants of aspergillus nidulans impaired in penicillin biosynthesis. 19744375170
genetic and biochemical studies of nitrate reduction in aspergillus nidulans.1. in aspergillus nidulans nitrate and nitrite induce nitrate reductase, nitrite reductase and hydroxylamine reductase, and ammonium represses the three enzymes. 2. nitrate reductase can donate electrons to a wide variety of acceptors in addition to nitrate. these artificial acceptors include benzyl viologen, 2-(p-iodophenyl)-3-(p-nitrophenyl)-5-phenyltetrazolium chloride, cytochrome c and potassium ferricyanide. similarly nitrite reductase and hydroxylamine reductase (which are possibly a singl ...19674382427
the stoicheiometry of electron transfer by bacterial and plant ferredoxins.1. the number of electrons carried by ferredoxins from spinach, the blue-green alga anacystis nidulans, the anaerobic bacterium clostridium welchii and the photosynthetic bacterium chromatium was determined. 2. ferredoxins were reduced by illuminated chloroplasts, and the stoicheiometry of the reoxidation in the dark of the ferredoxins by nadp and benzyl viologen was measured. 3. spinach and a. nidulans ferredoxins were found to be one-electron carriers, and cl. welchii and chromatium ferredoxin ...19684387387
control of gene action in aspergillus nidulans. 19704395097
characterization of the reduced nicotinamide adenine dinucleotide phosphate-nitrate reductase of aspergillus nidulans.the reduced nicotinamide adenine dinucleotide phosphate (nadph)-nitrate oxidoreductase (ec from aspergillus nidulans was purified over 200-fold by use of salt fractionation, gel filtration, and ion-exchange chromatography. the purified enzyme was specific for nadph and catalyzed reduction of nitrate, cytochrome c from isolated mitochondria of aspergillus, and mammalian cytochrome c. an s(0.725) (20, w) of 7.8 was derived with sucrose density gradient centrifugation, and a stokes radius ...19714396143
attempts to detect an alternative vital role for the reduced nicotinamide adenine dinucleotide phosphate-nitrate reductase structural gene in aspergillus nidulans.a possible alternate vital role of the structural gene for reduced nicotinamide adenine dinucleotide phosphate-nitrate reductase in aspergillus nidulans was tested for and found to be absent in a significant number of haploid and diploid strains.19714397637
relationship between energy substrate utilization and specific growth rate in aspergillus nidulans.the maintenance coefficient of glucose-limited aspergillus nidulans chemostat cultures at 30 c was 0.018 g per g (dry weight) per hr for glucose and 0.55 mmoles per g (dry weight) per hr for oxygen. these values can only be approximate because melanin was produced by the mold at low growth rates and because it is unlikely that this polymer contributed to the maintenance energy requirement although it contributed to the dry weight. biomass (defined here as dry weight minus melanin) was used to ca ...19714399338
regulation of the pentose phosphate pathway in the fungus aspergillus nidulans. 19724403947
[a quantitative analysis of conidia production in aspergillus nidulans]. 19744463418
response of aspergillus and penicillium spores to ultraviolet irradiation at low temperatures. 19724550409
high mutagenic effect of phenethyl nitrogen mustards and ethylene-iminopyrimidines in aspergillus nidulans. 19724550966
thermophilic fungi of some central south carolina forest soils. 19724551399
model for branch initiation in aspergillus nidulans based on measurements of growth parameters.the rate of hyphal elongation and the number of branches per hypha were measured on short sporelings of aspergillus nidulans growing at different rates. the rate of elongation was proportional to total length in unbranched and branched hyphae. at each growth rate, the number of branches per hypha increased with increasing length and gave approximately straight-line graphs when plotted against length. the average number of branches per unit of hyphal length was quite different for the various gro ...19724551743
purification and characterization of acid phosphatase v from aspergillus nidulans.acid phosphatase v of aspergillus nidulans was purified by ammonium sulfate precipitation, gel filtration, and ion-exchange chromatography. the enzyme demonstrated a charge microheterogeneity on starch and acrylamide gel electrophoresis, but proved to be homogeneous on ultracentrifugation and gel filtration. phosphatase v was found to be a classic acid orthophosphoric monoester phosphohydrolase, and it cleaved p-nitrophenylphosphate, glucose-6-phosphate, and uridine-5'-monophosphate at maximal r ...19724552990
gene regulation. 19724553109
a new depsidone from aspergillus nidulans. 19724556409
morphogenesis in aspergillus nidulans. the significance of a alpha-1, 3-glucan of the cell wall and alpha-1, 3-glucanase for cleistothecium development. 19724556771
on mycological fat production from iraqi date extract: the dibis. 19724557394
isolation and characterization of lactose non-utilizing mutants in aspergillus nidulans. 19724558195
mutator activity in uvs mutants of aspergillus nidulans. 19724558448
the utilization of l-tryptophan as nitrogen source by fusarium culmorum, aspergillus nidulans, and penicillium italicum. 19724559635
mutants with altered glucose repression of amidase enzymes in aspergillus nidulans.aspergillus nidulans produces acetamidase and formamidase enzymes. the acetamidase is produced in reduced amounts during growth on glucose, whereas the formamidase is not greatly affected. mutations in a gene, amdt, which affect glucose repression of amidases are described. one of these, amdt102, causes the acetamidase to be no longer subject to glucose repression and also affects ability to synthesize formamidase. the other, amdt19, results in both the formamidase and the acetamidase being subj ...19724559822
a study on iraqi date extract: "dibis" as substrate for mycological fat production. 19724560673
regulation of the acidic amino acid permease of aspergillus nidulans. 19724561785
non-specific uptake and specific binding of sulfate by aspergillus nidulans. 19724561786
nitrate repression of xanthine dehydrogenase ii in aspergillus nidulans. 19724561914
alcohol and amine catabolism in fungus aspergillus nidulans. 19724561915
control of nucleic acid synthesis in aspergillus nidulans. 19724561916
studies of temperature-sensitive cnx mutants in the fungus aspergillus nidulans. 19724561917
chlorate toxicity in the fungus aspergillus nidulans. 19724561918
mitotic non-conformity in aspergillus nidulans: the effects of caffeine. 19724562866
genetic control of the arginine pathways in aspergillus nidulans. common regulation of anabolism and catabolism. 19724563167
the identification of mortierella wolfii isolated from cases of abortion and pneumonia in cattle and a search for its infection source. 19724564333
fine structure of protoplasts of aspergillus nidulans. 19724564688
melanin production by aspergillus nidulans in batch and chemostat cultures. 19724564690
the genetic control of the arginine pathways in aspergillus nidulans mutants blocked in arginine biosynthesis. 19724566081
computerized meiotic mapping in aspergillus nidulans.a computer system for the storage and processing of microbial meiotic data has been developed. based on the language fortran 4, the program retrieves relevant data and determines the order, map distances, and coefficient of coincidence for any three-gene group. meiotic data from aspergillus nidulans were used to test the program. a total of 61 three-gene sequences were processed, and the results were found to be compatible with the published values. the advantages and disadvantages of computer a ...19724569180
kinetics of differentiation of conidiophores and conidia by colonies of aspergillus nidulans. 19724569577
influence of cytochalasin b on hyphal morphogenesis of aspergillus nidulans. 19734570045
mutations increasing the specificity of the sulphate permease in aspergillus nidulans. 19724570678
the foot cell morphology of genus aspergillus. 19734571244
an aspergillus nidulans mutant lacking cystathionine -synthase: identity of l-serine sulfhydrylase with cystathionine -synthase and its distinctness from o-acetyl-l-serine sulfhydrylase. 19734571410
biochemical changes in biotin deficient aspergillus nidulans. 19724572211
a quantitative analysis of cleistohecia production in aspergillus nidulans. 19724572699
chemostat for the cultivation of moulds. 19734572753
the phenotypes of the eight disomics and trisomics of aspergillus nidulans. 19734572926
mitotic intragenic recombination as a consequence of heteroduplex formation in aspergillus nidulans. 19734573864
subapical wall synthesis and wall thickening induced by cycloheximide in hyphae of aspergillus nidulans.hyphae of aspergillus nidulans continued to synthesize all the major polysaccharide components of the cell wall when cycloheximide was added to cultures. in the presence of cycloheximide, hyphae did not elongate, but electron microscopy showed that the walls became thicker around the cell. the conclusion that cycloheximide changed wall synthesis from extension at the apex to subapical thickening was supported by grain distributions on radioautograms of mutant hyphae labeled with galactose. these ...19734574700
heterozygous diploid strains of aspergillus nidulans: enhanced virulence for mice in comparison to a prototrophic haploid strain. 19734575394
arginase induction in aspergillus nidulans. the appearance and decay of the coding capacity of messenger. 19724576496
studies on beta-cystathionase and omicron-acetylhomoserine sulfhydrylase as the enzymes of alternative methionine biosynthetic pathways in aspergillus nidulans. 19734577164
a case of guttural pouch mycosis caused by aspergillus nidulans. 19734578531
growth of aspergillus nidulans in a thin liquid layer. 19734579127
the effects of specific auxotrophic mutations on the virulence of aspergillus nidulans for mice. 19734580921
the genetic control of molybdoflavoproteins in aspergillus nidulans. allopurinol-resistant mutants constitutive for xanthine-dehydrogenase. 19734581274
gene symbols in aspergillus nidulans. 19734581424
beta-galactosidase activity and lactose utilization in aspergillus nidulans. 19734584063
mycetomas caused by curvularia lunata, madurella grisea, aspergillus nidulans, and nocardia brasiliensis in sudan. 19734584205
a morphologic mutation in aspergillus nidulans associated with increased virulence for mice. 19734584520
isocitrate lyase from a thermophilic bacillus: effect of salts on enzyme activity.the isocitrate lyase from a thermophilic bacillus is activated about threefold by a variety of salts. such strong stimulation of activity is not seen with isocitrate lyase from the mesophiles, bacillus licheniformis, bacillus megaterium, escherichia coli, and aspergillus nidulans. the salt activation is markedly ph-dependent. at ph values above 8.6, salt (kcl) indeed inhibits the enzyme activity. potassium chloride also causes a significant shift of the ph optimum of the enzyme towards the acid ...19734584800
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