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  • 1
    Electronic Resource
    Electronic Resource
    Disruption of six Saccharomyces cerevisiae genes from chromosome IV and basic phenotypic analysis of deletion mutants (1998)
    New York, NY [u.a.] : Wiley-Blackwell
    Yeast 14 (1998), S. 1199-1208 
    Details
    ISSN: 0749-503X
    Keywords: LFH deletion cassette ; functional analysis ; chromosome IV ; Saccharomyces cerevisiae ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: We report here the construction of six deletion mutants and the analysis of their basic phenotype. Deletion cassettes containing the KanMX4 marker module and long flanking regions homologous to the target locus were constructed for each of the six open reading-frames (ORFs YDL088c, YDL087c, YDL086w, YDL085w, YDL084w and YDL082w) located on chromosome IV. Sporulation and tetrad analysis of heterozygous deletant strains revealed that, in the FY1679 genetic background, ORFs YDL088c, YDL087c and YDL084w are essential genes for vegetative growth whereas YDL086w, YDL085w and YDL082w are non-essential. ydl088cΔ and ydl084wΔ haploid strains are viable in the CEN. PK2 genetic background although ydl084wΔ grows at a slower rate than the wild type. Complementation tests by corresponding cognate genes confirmed that gene inactivation was responsible for these growth defects. © 1998 John Wiley & Sons, Ltd.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 2
    Electronic Resource
    Electronic Resource
    Molecular cloning of TvDAO1, a gene encoding a D-amino acid oxidase from Trigonopsis variabilis and its expression in Saccharomyces cerevisiae and Kluyveromyces lactis (1997)
    New York, NY [u.a.] : Wiley-Blackwell
    Yeast 13 (1997), S. 1399-1408 
    Details
    ISSN: 0749-503X
    Keywords: Trigonopsis variabilis ; D-amino acid oxidase ; heterologous gene expression ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The DAO1 gene of Trigonopsis variabilis encoding a D-amino acid oxidase (EC 1.4.3.3) was isolated from genomic clones selected for their specific hybridization to synthetic oligodeoxyribonucleotide probes based on regions of the enzyme that have been conserved through evolution. The nucleotide sequence of the gene predicts a protein with similarities to human, pig, rabbit, mouse and Fusarium solani D-amino acid oxidases. The open reading frame of the T. variabilis DAO1 gene was interrupted by an intron. The Dao1p sequence displays two regions, one in the N-terminal section - the FAD binding site - and the other near the C-terminal region that contains conserved signatures found in all the D-amino acid oxidases. The three C-terminal amino acids suggest that the enzyme may be located in peroxisomes. Northern blot experiments showed that no transcriptional activation occurred in the presence of D-methionine. The cDNA encoding Dao1p was expressed in Saccharomyces cerevisiae and Kluyveromyces lactis. Both yeast species are able to synthesize a functional enzyme under the control of the GAL1 promoter. In K. lactis, up to six times more enzyme units per gram of dry weight are produced with a multicopy plasmid in comparison with the wild-type strain of T. variabilis. The yeast expression system we describe may constitute an alternative source for the production of D-amino acid oxidases at industrial level. The sequence presented here has been submitted to the EMBL data library under Accession Number Z50019. © 1997 John Wiley & Sons, Ltd.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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