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  • 1
    ISSN: 0749-503X
    Keywords: Multifunctional FAS2 gene ; Chromosome hybridisation ; spo11 mapping ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The trifunctional FAS2 gene encoding subunits α of the Saccharomyces cerevisiae fatty acid synthetase complex was mapped on the left arm of chromosome XVI 24 centinorgans proximal to GAL4 and 39 centimorgans distal and PEP4 relative to the centromere. Mapping was achieved by three-independent methods: meiotic co-segragation of FAS2 and ARO7 in recombination-deficient spo11-mutants; tetrad analysis of crosses between FAS2, GAL4 and PEP4; and Southern hybridization of purified FAS2 DBA with individual yeast chromosomes separated by pulsed-field gel electrophoresis.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0749-503X
    Keywords: modified LFH cassette ; EUROFAN 6-pack analysis ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Six open reading frames (ORFs) of unknown function from Saccharomyces cerevisiae chromosome XV, three from the left and three from the right arm, were deleted in two diploid strains by the short flanking homology method (Wach et al., 1994). Transformants were selected as Geneticin (G418)-resistant colonies and correct integration of the kanMX4 cassette was checked by colony PCR. Following sporulation of the diploids, tetrads were dissected and scored for the segregation of the G418-resistant marker. We have developed a widely applicable method for the construction of gap repair plasmids to obtain the cognate clones for each of the disrupted ORFs. The 5′- and 3′-flanks of the ORF in question are linked by a unique restriction endonuclease. When the plasmid is cut at this site it can be used to obtain, by selection for the appropriate antibiotic resistance, long flanking homology (LFH) cassettes containing the cognate clone or the disrupted allele. The LFH cassette containing the cognate clone or the disrupted allele can be released from the gap-repaired plasmid by cutting at the inserted flanking restriction sites. One of the six ORFs (YOR319w) corresponds to an essential gene whose product is part of the spliceosome complex. Haploid as well as homozygous and heterozygous diploid disruptant strains for each of the five non-essential ORFs were subjected to growth test on different media at 15°C, 30°C and 37°C. Disruption of YOR322c causes osmotically sensitive growth on YEPD at 37°C and the product of YOL091w appears to play a role in sporulation since the homozygous diploid disruptant has lost the ability to sporulate. © 1998 John Wiley & Sons, Ltd.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0749-503X
    Keywords: Nucleotide metabolism ; a gene family of four ; in-frame insertion ; chromosomal localization ; Candida insectorum ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Saccharomyces cerevisiae contains at least four PRS genes, all of which have been cloned and sequenced. Each of the four derived amino acid sequences have more than 60% similarity to the corresponding polypeptides of man, rat, Escherichia coli and Salmonella typhimurium. The PRS1 gene maps on chromosome XI, PRS2 on chromosome V, PRS3 on chromosome VIII and PRS4 on chromosome II. One member of this gene family, PRS1, contains a region of non-homology (NHR) shown by cDNA cloning and sequencing not to be an intron. The results presented here suggest that the presence of this NHR is not detrimental to the function of the gene. To date the possibility of protein splicing can be neither proven nor disputed. The sequences submitted to the EMBL data library are available under the following accession numbers: PRS1 (X70069), PRS2 (X74414) and PRS3 (X74415).
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome XV sequencing ; Schizosaccharomyces pombe ; IRA2 ; cdr1/nim1 ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: A 10 270 bp fragment from the left arm of chromosome XV of Saccharomyces cerevisiae was sequenced and analysed. The sequence reveals the presence of two open reading frames (ORFs), one of them is the larger part of the previously sequenced gene IRA2 (YOL0951). The other ORF, YOL0950, has a length of 1245 nucleotides and exhibits no significant homology with any known gene, although there is some similarity of its upstream region to the corresponding region of the Schizosaccharomyces pombe cdr1/nim1 gene which is involved in the control of mitotic cell size. The sequence has been deposited in the EMBL data library under Accession Number X75449.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome XV sequencing ; expressed sequence tags ; ADH1 ; COQ3 ; MSH2 and RCF4 ; transmembrane proteins ; organelle targeting ; ARS ; GCN4 ; Arabidopsis thaliana ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The nucleotide sequence of a 29·425 kb fragment localized on the left arm of chromosome XV from Saccharomyces cerevisiae has been determined. The sequence contains 13 open reading frames (ORFs) of which four encode the known genes ADH1, COQ3, MSH2 and RCF4. Predictions are made concerning the functions of the unknown ORFs. Some of the ORFs contain sequences similar to expressed sequences tags (EST) found in the database made available by TIGR. In particular, the highly expressed ADH1 gene is represented in this database by no less than 20 EST sequences. Two ARS sequences and a putative functional GCN4 motif have also been detected. One ORF (O0953) containing nine putative transmembrane segments is similar to a hypothetical membrane protein of Arabidopsis thaliana. Characteristic features of the other ORFs include ATP/GTP binding sites, a fungal Zn(2)-Cys(6) binuclear centre, an endoplasmic reticulum targeting sequence, a β-transducin repeat signature and in two instances, good similarity to the prokaryotic lipoprotein signal peptide motif. The sequence has been deposited in the EMBL data library under Accession Number X83121.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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