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  • 1995-1999  (4)
  • 1985-1989
  • 1996  (3)
  • 1995  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Current genetics 29 (1996), S. 437-440 
    ISSN: 1432-0983
    Keywords: Yeast ; Formaldehyde ; Hyper-resistance ; Alcohol dehydrogenase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In an attempt to clone genes involved in resistance to formaldehyde we have screened a genomic library based on the episomal plasmid YEp24 for the ability to increase resistance to formaldehyde in a wild-type strain. In addition toSFA, the gene encoding the formaldehyde dehydrogenase Adh5, an enzyme most potent in formaldehyde de-toxification, we isolated a second plasmid that conferred a less pronounced but significant hyper-resistance to formaldehyde. Its passenger DNA contained the geneADH1, encoding alcohol dehydrogenase 1 (EC 1.1.1.1), which could be shown to be responsible for the observed hyper-resistance phenotype. Construction of anadh1-0 mutant revealed that yeast lacking a functionalADH1 gene is sensitive to formaldehyde. While glutathione is essential for Adh5-mediated formaldehyde de-toxification, Adh1 reduced formaldehyde best in the absence of this thiol compound. Evidence is presented that formaldehyde is a substrate for Adh1 in vivo and in vitro and that its cellular de-toxification employs a reductive step that may yield methanol.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Molecular genetics and genomics 250 (1996), S. 162-168 
    ISSN: 1617-4623
    Keywords: DNA repair ; Regulation ; Gene fusion ; DRE element ; Saccharomyces cerevisiae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The interstrand cross-link repair geneSNM1 ofSaccharomyces cerevisiae was examined for regulation in response to DNA-damaging agents. Induction ofSNM1-lacZ fusions was detected in response to nitrogen mustard, cis-platinum (II) diamine dichloride, UV light, and 8-methoxypsoralen + UVA, but not after heat-shock treatment or incubation with 2-dimethyl-aminoethylchloride, methylmethane sulfonate or 4-nitroquinoline-N-oxide. The promoter ofSNM1 contains a 15 bp motif, which shows homology to the DRE2 box of theRAD2 promoter. Similar motifs have been found in promoter regions of other damage-inducible DNA repair genes. Deletion of this motif results in loss of inducibility ofSNM1. Also, a putative negative up-stream regulation sequence was found to be responsible for repression of constitutive transcription ofSNM1. Surprisingly, no inducibility ofSNM1 was found after treatment with DNA-damaging agents in strains without an intactDUN1 gene, while regulation seems unchanged insad1 mutants.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0991
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. Sequencing of four overlapping DNA fragments comprising 3.527 kb isolated from a L. leichmannii genomic library revealed three complete open reading frames (ORFs) and one that was truncated. The deduced amino acid sequences of the complete ORFs showed considerable similarities with the already known sequences of the xerC, hslV, and hslU gene products of Escherichia coli: the site-specific XerC recombinase, a member of the lambda integrase family, and the HtpI resp. HtpO heat shock proteins. The deduced amino acid sequence of the fourth, incomplete ORF upstream the xerC gene showed strong homology with the gidA gene product of B. subtilis.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome II sequence ; CDC28 ; SUR1 homolog ; putative surface protein ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The sequence of a 5653 bp DNA fragment of the right arm of chromosome II of Saccharomyces cerevisiae contains two unknown open reading frames (YBR1212 and YBR1213) next to gene CDC28. Gene disruption reveals both putative genes as non-essential. ORF YBR1212 encodes a predicted protein with 71% similarity and 65% identity (total polypeptide of 376 aa) with the 378 aa Sur1 protein of S. cerevisiae, while the putative product of ORF YBR1213, which is strongly expressed, has 28% identity with a Lactococcus lactis-secreted 45 kDa protein and 24% identity with the Saccharomyces cerevisiae AGA1 gene product. The total sequence of the fragment has been submitted to the EMBL databank (accession number X80224).
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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