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  • 1
    ISSN: 0749-503X
    Keywords: Threonine metabolism ; amino acid biosynthesis ; homologous domains ; chromosome III ; gene organisation ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The gene encoding theonine synthase (THR4) from the yeast Saccharomyces cerevisiae was cloned by complementation of a thr4 mutant. This gene was also found on a lambda clone (5239) consisting of a fragment of chromosome III inserted in the vector lambda MG3. The THR4 gene encodes a protein of 514 amino acids (M.W. 58 kDa), which has extensive homologies with E. coli threonine synthase (thrC) and B. subtilis threonine synthase. The 5′ flanking region of the gene contains three regulatory sequences. [TGACT(C)] for the general amino acid control (GCN).About 130 bp downstream of the THR4 gene another open reading frame (563 amino acids) is found in the opposite orientation. This may imply that this open reading frame, called CTR86, shares a terminator region with THR4. The function of the protein encoded by CTR86 is not yet clear, but the fact that the upstream region contains a GCN4 responsive site that the gene product may also be involved in amino acid biosynthesis.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome II ; RAD16 ; DNA helicase ; double-finger motif ; DNA excision repair ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: We have analysed a region some 30 kb centromere distal form PHO5 on the right arm of yeast chromosome II and determined the nucleotide sequence of a 8.95 kb DNA segment from this region. By this analysis we were able to derive the precise location and the transcriptional orientation of CMD1, ALG1, SSN6 and LYS2. An open reading frame of 2370 bp was locatlized between SSN6 and LYS2, which has recently been identified (Schild et al., 1991) to be the RAD16 gene. The putative gene product, 790 amino acids in length, reveals several interesting freatures. It contains a nuclear target singnature and shares several blocks of similarity with the yeast recombinational repair protein RAD54 and the nuclear factor SNF2 (SW12), which is required for teh transcriptioal activation of a number of yeast genes. The similarity blocks in these three proteins are reminiscent of those found in the helicase superfamily. Furthrmore, RAD16 contains a novel ‘double-finger’ motif, which has been encountered in a variety of proteins from different organisms that are suggested to interact with DNA and are involved in diverse functions including site-specific recombination, DNA repair, and transcriptional regulation. The putative gene product of RAD16 then is the first example of a proteins in which the novel double-finger motif is found to be combined with a poteintial DNA helicase framework.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0749-503X
    Keywords: Multi-gene family ; ATPases ; proteasome ; S. cerevisiae ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: There is accumulating evidence for a large, highly conserved gene family of putative ATPases. We have identified 12 different members of this novel gene family (the YTA family) in yeast and determined the nucleotide sequences of nine of these genes. All of the putative gene products are characterized by the presence of a highly conserved domain of 300 amino acids containing specialized forms of the A and B boxes of ATPases. YTA1, YTA2, YTA3 and YTA5 exhibit significant similarity to proteins involved in human immunodeficiency virus Tat-mediated gene expression but more significantly to subunits of the human 26S proteasome. YTA1 and YTA2 are essential genes in yeast. Remarkably, the cDNA of human TBP-1 can compensate for the loss of YTA1. Preliminary experiments indicate that YTA1 is a component of the 26S protease complex from yeast. Our findings lead us to propose that YTA1, YTA2, YTA3 and YTA5 function as regulatory subunits of the yeast 26S proteasome. YTA10, YTA11 and YTA12 share significant homology with the Escherichia coli FtsH protein, and together with YTA4 and YTA6 may constitute a separate subclass within this family of putative ATPases.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome II ; ORFs ; predictable functions ; regulatory elements ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: In the framework of the EC programme for sequencing yeast chromosome II, we have determined the nucleotide sequence of a 70 kb region. Subsequent analysis revealed 35 open reading frames, 14 of which correspond to known yeast genes. From structural parameters and/or similarity searches with entries in the current data libraries, a preliminary functional assessment of several of the putative novel gene products can be made. The gene density in this region amounts to one gene in 1.98 kb. Coding regions occupy 75% of the total DNA sequence. Within the intergenic regions, potential regulatory elements can be predicted. The data obtained here may serve as a basis for a more detailed biochemical analysis of the novel genes. The complete nucleotide sequence of the 70 kb segment as depicted in Figure 1 has been deposited in the EMBL data library under Accession Number X78993.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Yeast 12 (1996), S. 67-76 
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome XV ; ORFs ; predictable functions ; regulatory elements ; Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: In the framework of the EC programme for sequencing yeast chromosome XV, we have determined the nucleotide sequence of a 26 kb region. Subsequent analysis revealed 13 non-overlapping open reading frames, three of which correspond to known yeast genes. A pair of tRNA genes associated with remnant Ty elements were localized in this region. From structural parameters and/or similarity searches with entries in the current data libraries, a preliminary functional assessment of several of the putative novel gene products can be made. The gene density in this region amounts to one gene in 2 kb. Protein coding regions occupy 61% of the total DNA sequence. Within the intergenic regions, potential regulatory elements can be predicted. The data obtained here may serve as a basis for a more detailed biochemical analysis of the novel genes. The complete nucleotide sequence of the 26 kb segment as depicted in Figure 1 has been deposited at the EBI data library under Accession Number X91067.
    Additional Material: 3 Ill.
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  • 6
    Publication Date: 2014-06-06
    Description: Biochemistry DOI: 10.1021/bi5004475
    Print ISSN: 0006-2960
    Electronic ISSN: 1520-4995
    Topics: Biology , Chemistry and Pharmacology
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