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  • 1
    Electronic Resource
    Electronic Resource
    The Aspergillus niger acuA and acuB genes correspond to the facA and facB genes in Aspergillus nidulans (1999)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 178 (1999), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Mutants in Aspergillus niger unable to grow on acetate as a sole carbon source were previously isolated by resistance to 1.2% propionate medium containing 0.1% glucose. AcuA mutants lacked acetyl-CoA synthetase (ACS) activity and acuB mutants lacked both ACS and isocitrate lyase activity. An acuA mutant was transformed to the acu+ phenotype with a clone of ACS (facA) from Aspergillus nidulans. The acuB mutant was transformed with the A. niger facB clone which has been identified by cross-hybridisation of an A. nidulans facB clone. These results confirm that acuA in A. niger is the gene for ACS and acuB is analogous to the A. nidulans facB regulatory gene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1999.tb13756.x
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  • 2
    Electronic Resource
    Electronic Resource
    Chromosomal mapping of an alcC disruption with respect to amdA in Aspergillus nidulans (1990)
    Springer
    Current genetics 17 (1990), S. 81-83 
    Details
    ISSN: 1432-0983
    Keywords: alcC disruption ; Mapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We report the use of the riboB gene for a gene replacement in the alcC gene of Aspergillus nidulans, and show by “reverse genetics” that the alcC gene is very closely linked to the amdA gene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00313253
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  • 3
    Electronic Resource
    Electronic Resource
    Chromosomal mapping and gene disruption of the ADHIII gene in Aspergillus nidulans (1989)
    Springer
    Current genetics 15 (1989), S. 135-142 
    Details
    ISSN: 1432-0983
    Keywords: Aspergillus ; Mapping ; Disruption ; ADHIII ; alcC
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary There are at least three alcohol dehydrogenases in Aspergillus nidulans. ADHIII has no obvious physiological function. We describe here the cloning of the ADHIII gene (alcC), its mapping on linkage group VII by “reverse genetics”, and the properties of multicopy transformants tested for their ability to grow on a range of alcohols (butan-1-ol being the best substrate tested for growth). We were unable to detect any obvious alteration in phenotype of a strain carrying a disrupted copy of the ADHIII gene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00435460
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  • 4
    Electronic Resource
    Electronic Resource
    Chromosomal mapping of an alcC disruption with respect to amdA in Aspergillus nidulans (1990)
    Springer
    Current genetics 17 (1990), S. 547-547 
    Details
    ISSN: 1432-0983
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00313087
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  • 5
    Electronic Resource
    Electronic Resource
    A new selection method for isolating mutants defective in acetate utilisation inAspergillus nidulans (1994)
    Springer
    Current genetics 25 (1994), S. 47-48 
    Details
    ISSN: 1432-0983
    Keywords: Aspergillus nidulans ; Acetate ; Propionate metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Propionate medium is normally toxic for the growth ofAspergillus nidulans. Spontaneous mutations relieving the toxicity to propionate, which arose on propionate medium, have been shown to be mutations in acetate metabolism. Oneacu − mutant is allelic withacuA (the structural gene for acetyl-CoA synthetase), another withacuB (the regulatory gene involved in the induction of enzymes concerned with acetate metabolism, including acetyl-CoA synthetase), and a third mutants,acuO, represents a newacu − locus that maps on likage group V.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00712966
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  • 6
    Electronic Resource
    Electronic Resource
    The cloning and sequencing of thealcB gene, coding for alcohol dehydrogenase II, inAspergillus nidulans (1996)
    Springer
    Current genetics 29 (1996), S. 122-129 
    Details
    ISSN: 1432-0983
    Keywords: Alcohol dehydrogenase II ; Aspergillus nidulans
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Alcohol dehydrogenase II (ADH II, structural genealcB) was purified from a strain H1035,biA1; alcE1; alc500 alcD1, which produces 100-times more ADH II activity than thealcAalcR deletion strain (alc500). Antibodies were raised against this ADH, and were used to screen a cDNA library in γgt11. We have isolated the gene for an ADH which is over-expressed in H1035, and which we believe to be thealcB gene; cDNA and genomic clones were sequenced. The sequence contains three introns and encodes a protein of 367 amino acids. This protein shows a clear level of identity to a range of alcohol dehydrogenases, but is no more closely related to the ADH I and ADH III previously described inA. nidulans than to the ADHs ofS. pombe andS. cerevisiae. The significance of consensus sequences found in the 5′ region of the gene is discussed in relation to the regulation of the gene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02221575
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  • 7
    Electronic Resource
    Electronic Resource
    Regulation of two alcohol dehydrogenases in Aspergillus nidulans (1984)
    Springer
    Current genetics 8 (1984), S. 253-259 
    Details
    ISSN: 1432-0983
    Keywords: Regulation ; Alcohol dehydrogenases ; Aspergillus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In Aspergillus nidulans there are two alcohol dehydrogenases. In the presence of ethanol, alcohol dehydrogenase I (AHH I) is induced and alcohol dehydrogenase II (ADH II) is repressed. ADH I and ADH II have molecular weights of 39,000 and 36,000 respectively. At least ADH I is under the control of alcR, a transacting regulatory gene that is adjacent to alcA (the structural gene for ADH I, Pateman et al. 1983). Mutations in the alcR regulatory gene result in non inducibility of ADH I specific mRNA. Extreme alcA and alcR mutations result in derepressed levels of ADH II, and it is not clear whether alcR controls ADH II directly or through its control of ADH I synthesis. Both enzymes are subject to carbon catabolite repression. Induction of ADH I and ADH II operates at the level of synthesis or processing of mRNA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00419721
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  • 8
    Electronic Resource
    Electronic Resource
    Suppressible alleles in a wide domain regulatory gene in Aspergillus nidulans (1984)
    Springer
    Current genetics 8 (1984), S. 245-251 
    Details
    ISSN: 1432-0983
    Keywords: Translation suppression ; Regulatory genes ; Aspergillus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The areA gene of Aspergillus nidulans is a one of the better studied eukaryotic wide domain regulatory genes, necessary for the expression of most structural genes involved in the utilization of a wide variety of nitrogen sources (Arst and Cove 1973; Arst 1983). Here we report the isolation and properties of areA alleles suppressible by translational suppressors (Roberts et al. 1979). Thus we show formally that the areA gene specifies a protein rather than an RNA product and we show that it is possible to generate by external suppression areA gene products with modified properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00419720
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  • 9
    Electronic Resource
    Electronic Resource
    An NADP+-dependent glycerol dehydrogenase in Aspergillus nidulans is inducible by D-galacturonate (1992)
    Springer
    Current genetics 22 (1992), S. 293-296 
    Details
    ISSN: 1432-0983
    Keywords: NADP+ ; dependent glycerol dehydrogenase II
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In Aspergillus nidulans there is an NADP+-dependent glycerol dehydrogenase that is specifically induced on transfer to D-galacturonate medium. In contrast to the previously characterised constitutive NADP+-dependent glycerol dehydrogenase it has a much broader substrate specificity, having activity as an ethanol dehydrogenase, and is subject to carbon-catabolite repression. In addition to the two NADP+-dependent glycerol dehydrogenases, alcohol dehydrogenase I and II are also present on transfer to D-galacturonate medium, and have weak activity as glycerol dehydrogenases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00317924
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  • 10
    Electronic Resource
    Electronic Resource
    Dominant and recessive informational suppressors of a missense mutation in Coprinus (1977)
    Springer
    Molecular genetics and genomics 151 (1977), S. 189-195 
    Details
    ISSN: 1617-4623
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Twenty-one suppressor gene mutations which suppress the met-5.1 missense mutation of Coprinus were separated into six groups (A-F) on the basis of dominance or recessiveness, linkage to the met-5 locus, comlementation in heterozygous cells and growth behaviour. The actual number of suppressor loci could not be determined because crosses between suppressed mutants were inviable. The allele specificity of group A, C, D and F suppressors was confirmed by appropriate crosses. Group B and E suppressors were not tested because of close linkage to the met-5 locus. No evidence for functional suppression of met-5 mutations was obtained thus it is likely that all the suppressors cause translational corelation of met-5.1. Suppressors in four groups (C-F) have properties expected of tRNA structural gene mutations: the group C mutation is dominant, the other mutations are recessive but do not complement in heterozygous cells. The relative efficiencies of the tRNA species involved was assessed by comparing the degree to which the different sup + mutations depressed the growth rate on methionine supplemented medium. The dominant mutation depressed growth to the greatest extent and is, therefore, the most efficient suppressor. The least efficient suppressors did not depress growth at all. When growth was compared on minimal medium it was found that the more efficient the suppressor the less well it restored growth. The mutations in groups A and B depressed growth more than the tRNA mutations but affect some other component in translation because they are recessive and complement normally. It is suggested that they may act to alter tRNA modifying enzymes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00338694
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