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  • chromosome VII  (29)
  • 1995-1999  (29)
  • 1
    ISSN: 0749-503X
    Keywords: genome sequencing ; Saccharomyces cerevisiae ; chromosome VII ; CEG1 ; SOH1 ; DnaJ ; SCS3 ; Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: We report the sequence analysis of a 10 kb DNA fragment of Saccharomyces cerevisiae chromosome VII. This sequence contains four complete open reading frames (ORFs) of greater than 100 amino acids. There are also two incomplete ORFs flanking the extremes: one of these, G2868, is the 5′ part of the SCS3 gene (Hosaka et al., 1994). ORFs G2853 and G2856 correspond to the genes CEG1, coding for the alfa subunit of the mRNA guanylyl transferase and a 3′ gene of unknown function previously sequenced (Shibagaki et al., 1992). G2864 is identical to SOH1 also reported (Fan and Klein, 1994). The translated sequence of G2861 is similar to the human dnaJ homolog. The nucleotide sequence reported here has been entered in the EMBL Data Library under the Accession Number X87252.
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  • 2
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome VII ; genome sequencing ; ribosomal protein ; serine/threonine protein kinase ; transcriptional regulatory protein ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The nucleotide sequence of a 40·5 kb DNA fragment from the left arm of chromosome VII of Saccharomyces cerevisiae was determined and analysed. Twenty-eight open reading frames (ORFs) longer than 300 nucleotides were identified. Eight of them correspond to the following known yeast genes: EMP24, GCN1, SPO8, COX13, CDC55, RPS26, COX4 and LSR1, also called GTS1. Twelve ORFs are new, among them eight show homology with other genes while four have no homology with any sequence in the databases. Eight additional ORFs are internal to or partially overlapping with other ORFs. The nucleotide sequence reported here is deposited in the EMBL database under the Accession Numbers X91837 and X91489. © 1997 by John Wiley & Sons, Ltd.
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  • 3
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome VII ; MEP1 ; NUP57 ; PPT1 ; asparagine synthetase ; tRNA gene ; sigma ; delta ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: An 18·3 kb DNA segment from yeast Saccharomyces cerevisiae chromosome VII encompasses the previously characterized MEP1, NUP57 and PPT1 genes as well as seven new open reading frames (ORFs) of at least 100 residues. G6358 is an ubiquitous glutamine-dependant asparagine synthase. G6362 is a membrane protein highly homologous to a protein of unknown function in the yeast Schizosaccharomyces pombe. Three ORFs (G6324, G6335 and G6365) have no significant homology with previously reported proteins or characteristic motifs. G6321 and G6359, enclosed in longer ORFs, are not likely to be coding. The segment also contains tRNA genes for Asn, Arg and Ile as well as a sigma element and two solo deltas. ORFs and genetic elements are named according to a preliminary working nomenclature. The sequence is recorded in GenBankTM/EMBL under Accession Number X83099.©1997 John Wiley & Sons, Ltd.
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  • 4
    ISSN: 0749-503X
    Keywords: yeast ; genome sequencing ; chromosome VII ; long-range PCR ; clone instability ; ARO2 ; RPL9A ; TIP1 ; MRF1 ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The nucleotide sequence of 22 803 bp on the left arm of chromosome VII was determined by polymerase chain reaction-based approaches to compensate for the unstable character of cosmid clones from this region of the chromosome. The coding density of the sequence is particularly high (more than 83%). Twelve open reading frames (ORFs) longer than 300 bp were found, two of which (at the left side) have been described previously (James et al., 1995) after sequencing of an overlapping cosmid. Four other ORFs correspond to published sequences of the known genes ARO2, RPL9A, TIP1 and MRF1. ARO2 codes for chorismate synthetase, RPL9A for protein L9 of the large ribosomal subunit and MRF1 for a mitochondrial translation release factor. The TIP1 product interacts with Sec20p and is thus involved in transport from endoplasmic reticulum to Golgi. Five of the remaining ORFs have not been identified previously, while the sixth (YGL142c) has been partially sequenced as it lies 5′ upstream of MRF1. These six ORFs are relatively large (between 933 and 3657 nucleotides). YGL146c, YGL142c, YGL140c and YGL139w have no significant homology to any protein sequence presently available in the public databases, but show two, nine, nine and eight putative transmembrane spans, respectively. YGL144c has a serine active site signature of lipases. YGL141w has limited homology to several human proteins, one of which mediates complex formation between papillomavirus E6 oncoprotein and tumor suppressor protein p53. The sequence reported in this paper has been deposited in the EMBL DNA data library under Accession Number X99960.©1997 John Wiley & Sons, Ltd.
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  • 5
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; ERG1 ; squalene epoxidase ; chromosome VII ; sterol biosynthesis ; Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The ERG1 gene of Saccharomyces cerevisiae encodes squalene epoxidase, a key enzyme in the ergosterol pathway. ERG1 is an essential gene. Disruption of the gene with URA3 results in a lethal phenotype when cells are grown under aerobic conditions, even in the presence of ergosterol. However, cells are viable in the presence of ergosterol under anaerobic growth conditions during which ergosterol is taken up by cells. Physical and genetic mapping data reveal that ERG1 is located on the right arm of chromosome VII proximal to QCR9 at a distance of 14·6 cM from ADE3.
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  • 6
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Yeast 13 (1997), S. 1077-1090 
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome VII ; sequence ; snRNA ; SNR10 ; SNR39 ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The nucleotide sequences of five major regions from chromosome VII of Saccharomyces cerevisiae have been determined and analysed. These regions represent 203 kilobases corresponding to approximately one-fifth of the complete yeast chromosome VII. Two fragments originate from the left arm of this chromosome. The first one of about 15·8 kb starts approximately 75 kb from the left telomere and is bordered by the SKI8 chromosomal marker. The second fragment covers the 72·6 kb region between the chromosomal markers CYH2 and ALG2. On the right chromosomal arm three regions, a 70·6 kb region between the MSB2 and the KSS1 chromosomal markers and two smaller regions dominated by the KRE11 marker and another one in the vicinity of the SER2 marker were sequenced.We found a total of 114 open reading frames (ORFs), 13 of which were completely overlapping with larger ORFs running in the opposite direction.A total of 44 yeast genes, the physiological functions of which are known, could be precisely mapped on this chromosome.Of the remaining 57 ORFs, 26 shared sequence homologies with known genes, among which were 13 other S. cerevisiae genes and five genes from other organisms. No homology with any sequence in the databases could be found for 31 ORFs.Furthermore, five Ty elements were found, one of which may not be functional due to a frame shift in its Ty1B amino acid sequence.The five chromosomal regions harboured five potential ARS elements and one sigma element together with eight tRNA genes and two snRNAs, one of which is encoded by an intron of a protein-coding gene. © 1997 by John Wiley & Sons, Ltd.
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  • 7
    ISSN: 0749-503X
    Keywords: genome sequencing ; Saccharomyces cerevisiae ; chromosome VII ; ROK1 ; PMR1 ; SUA5 ; tRNALys1 ; ATP-dependent RNA helicase ; Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: We report the sequence of an 8·8 kb segment of DNA from the left arm of chromosome VII of Saccharomyces cerevisiae. The sequence reveals seven open reading frames (ORFs) G1651, G1654, G1660, G1663, G1666, G1667 and G1669 greater than 100 amino acids in length and the tRNALys1 gene. ORF G1651 shows 100% identity with the ROK1 protein which is a putative RNA helicase of the ‘DEAD box’ protein family. ORF G1654 exhibits a motif highly conserved in ATP/GTP binding proteins generally referred to as ‘P-loop’. From FastA analysis, G1660 and G1666 were found to be previously sequenced genes, respectively SUA5 and PMR1. The three other ORFs identified are partially (G1663) or completely (G1667 and G1669) overlapping with the PMR1 sequence on the complementary strand. This feature, together with their low codon adaptation indexes and the absence of significant homology with known proteins suggest that they do not correspond to real genes. The nucleotide sequence of the 8·8 kb fragment is available through the EMBL data library under the Accession Number X85757.
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  • 8
    ISSN: 0749-503X
    Keywords: genome sequencing ; Saccharomyces cerevisiae ; chromosome VII ; methylenetetrahydrofolate reductase ; SCS3 ; SUP44 ; Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: We report the sequence analysis of a 6·8 kb DNA fragment from Saccharomyces cerevisiae chromosome VII. This sequence contains five open reading frames (ORFs) greater than 100 amino acids. There is also an incomplete ORF flanking one of the extremes, G2868, which is the 3′ end of the SCS3 gene (Hosaka et al., 1994). The translated sequence of ORF G2882 shows similarity to the human methylenetetrahydrofolate reductase (Goyette et al., 1994). ORF G2889 shows no significant homologies with the sequences compiled in databases. ORF G2893 corresponds to the gene SUP44, coding for the yeast ribosomal protein S4 (All-Robin et al., 1990). G2873 and G2896 are internal ORFs. The whole sequence of the fragment is available at the EMBL nucleotide sequence database, GenBank and Data Bank of Japan under the Accession Number X94106.
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  • 9
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome VII ; FOL2 ; YTA7 ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: In the framework of the EU programme for systematic sequencing of the Saccharomyces cerevisiae genome we determined the sequence of a 9359 bp fragment of the right arm of chromosome VII. Five open reading frames (ORFs) of at least 300 nucleotides were found in this region. YGR267c encodes a protein with significant similarity to the enzyme GTP-cyclohydrolase I, that controls the first step in the biosynthetic pathway leading to various pterins and shows a high degree of sequence conservation from bacteria to mammals. We have recently demonstrated (Nardese et al., 1996) that YGR267c corresponds to the FOL2 gene, previously localized in the same chromosomal region by genetic mapping. The protein deduced from YGR270w belongs to the superfamily of putative ATPases associated with diverse cellular activities. It corresponds to the YTA7 gene, a member of a set of yeast genes coding for putative ATPases with high similarity to constituents of the 26S protease. The three ORFs YGR266w, YGR268c and YGR269w encode putative products of unknown function, with neither significant similarity to proteins in databases nor recognizable domains. YGR268c and YGR269w are partially overlapping ORFs: YGR268c seems to correspond to a real gene, whereas YGR269w is probably a fortuitous ORF. The sequence has been entered in the EMBL data library under Accession Number Y07893. © 1998 John Wiley & Sons, Ltd.
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  • 10
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome VII ; ribonuclease PH ; HGH1 ; YGR187c ; YGR189c ; YGR194c ; YGR195w ; YGR196c ; YGR198w ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: We have deleted six different ORFs of unknown function located on the right arm of Saccharomyces cerevisiae chromosome VII; namely, YGR187c/HGH1, YGR189c, YGR194c, YGR195w, YGR196c and YGR198w. No basic phenotypes could be attributed to the strains deleted in any of genes YGR187c/HGH1, YGR189c, YGR194c and YGR196c. These deletants did not show mating, sporulation or growth defects under any of the conditions tested. However, spores bearing deletions in either the YGR195w or YGR198w genes were unable to develop into macroscopical colonies. The YGR195w gene product shows significant homology with bacterial ribonuclease PH, an enzyme hitherto undescribed in yeasts, and its deletion causes a loss of viability after one to three rounds of cell division. Overexpression of this gene, using a tetracycline-regulatable promoter system, did not cause any effect on the cells. Contrary to what has been reported for prokaryotic homologs, this enzyme could play an essential role in yeast cell biology. The product encoded by the other essential ORF, YGR198w, shows no significant homology with any protein of known function in the databases. Spores bearing the deletion usually germinate and give rise to microcolonies of 50-100 non-viable cells. © 1998 John Wiley & Sons, Ltd.
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