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Carman GM, Henry SA. Phospholipid biosynthesis in the yeast Saccharomyces cerevisiae and interrelationship with other metabolic processes. Prog Lipid Res 1999; 38:361-99. [PMID: 10793889 DOI: 10.1016/s0163-7827(99)00010-7] [Citation(s) in RCA: 250] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
In this review, we have discussed recent progress in the study of the regulation that controls phospholipid metabolism in S. cerevisiae. This regulation occurs on multiple levels and is tightly integrated with a large number of other cellular processes and related metabolic and signal transduction pathways. Progress in deciphering this complex regulation has been very rapid in the last few years, aided by the availability of the sequence of the entire Saccharomyces genome. The assignment of functions to the remaining unassigned open reading frames, as well as ascertainment of remaining gene-enzyme relationships in phospholipid biosynthesis in yeast, promises to provide detailed understanding of the genetic regulation of a crucial area of metabolism in a key eukaryotic model system. Since the processes of lipid metabolism, secretion, and signal transduction show fundamental similarities in all eukaryotes, the dissection of this regulation in yeast promises to have wide application to our understanding of metabolic control in all eukaryotes.
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Affiliation(s)
- G M Carman
- Department of Food Science, Cook College, New Jersey Agricultural Experiment Station, Rutgers University, New Brunswick 08901, USA.
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2
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Chang SC, Heacock PN, Clancey CJ, Dowhan W. The PEL1 gene (renamed PGS1) encodes the phosphatidylglycero-phosphate synthase of Saccharomyces cerevisiae. J Biol Chem 1998; 273:9829-36. [PMID: 9545322 DOI: 10.1074/jbc.273.16.9829] [Citation(s) in RCA: 175] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Phosphatidylglycerophosphate (PG-P) synthase catalyzes the synthesis of PG-P from CDP-diacylglycerol and sn-glycerol 3-phosphate and functions as the committed and rate-limiting step in the biosynthesis of cardiolipin (CL). In eukaryotic cells, CL is found predominantly in the inner mitochondrial membrane and is generally thought to be an essential component of many mitochondrial functions. We have determined that the PEL1 gene (now renamed PGS1), previously proposed to encode a second phosphatidylserine synthase of yeast (Janitor, M., Jarosch, E., Schweyen, R. J., and Subik, J. (1995) Yeast 13, 1223-1231), in fact encodes a PG-P synthase of Saccharomyces cerevisiae. Overexpression of the PGS1 gene product under the inducible GAL1 promoter resulted in a 14-fold increase in in vitro PG-P synthase activity. Disruption of the PGS1 gene in a haploid strain of yeast did not lead to a loss of viability but did result in a dependence on a fermentable carbon source for growth, a temperature sensitivity for growth, and a petite lethal phenotype. The pgs1 null mutant exhibited no detectable in vitro PG-P synthase activity and no detectable CL or phosphatidylglycerol (PG); significant CL synthase activity was still present. The growth arrest phenotype and lack of PG-P synthase activity of a pgsA null allele of Escherichia coli was corrected by an N-terminal truncated derivative of the yeast PG-P synthase. These results unequivocally demonstrate that the PGS1 gene encodes the major PG-P synthase of yeast and that neither PG nor CL are absolutely essential for cell viability but may be important for normal mitochondrial function.
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Affiliation(s)
- S C Chang
- Department of Biochemistry and Molecular Biology, University of Texas Medical School, Houston, Texas 77225, USA
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3
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Goffeau A, Park J, Paulsen IT, Jonniaux JL, Dinh T, Mordant P, Saier MH. Multidrug-resistant transport proteins in yeast: complete inventory and phylogenetic characterization of yeast open reading frames with the major facilitator superfamily. Yeast 1997; 13:43-54. [PMID: 9046086 DOI: 10.1002/(sici)1097-0061(199701)13:1<43::aid-yea56>3.0.co;2-j] [Citation(s) in RCA: 113] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Screening of the complete genome sequence from the yeast Saccharomyces cerevisiae reveals that 28 open reading frames (ORFs) are homologous to each other and to established bacterial members of the drug-resistant subfamily of the major facilitator superfamily. The phylogenesis of these protein sequences shows that they fall into three major clusters. Cluster I contains 12 ORFs, cluster II contains ten ORFs and cluster III contains six ORFs. Hydropathy analyses indicate that in cluster II and III ORFs, 14 transmembrane spans are predicted whereas only 12 transmembrane spans are predicted in cluster I ORFs. Three ORFs that have known functions as multidrug-resistance pumps in other yeast species such as Schizosaccharomyces pombe (CAR1), Candida albicans (BMRP) or C. maltosa (CYHR), also fall into cluster I. Two S. cerevisiae ORFs of known multidrug-resistance function (ATR1, SGE1) fall into cluster II. Cluster III consists exclusively of ORFs of unknown function but binary sequence comparisons show homology to ORFs from cluster II. Analysis of the multiple alignment for these proteins leads to the identification of characteristic signature sequences for each of the three clusters.
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Affiliation(s)
- A Goffeau
- Unité de Biochimie Physiologique, Université de Louvain, Louvain-la-Neuve, Belgium
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4
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Dölz R, Mossé MO, Slonimski PP, Bairoch A, Linder P. LISTA, LISTA-HOP and LISTA-HON: a comprehensive compilation of protein encoding sequences and its associated homology databases from the yeast Saccharomyces. Nucleic Acids Res 1996; 24:50-2. [PMID: 8594599 PMCID: PMC145566 DOI: 10.1093/nar/24.1.50] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
We continued our effort to make a comprehensive database (LISTA) for the yeast Saccharomyces cerevisiae. As in previous editions the genetic names are consistently associated to each sequence with a known and confirmed ORF. If necessary, synonyms are given in the case of allelic duplicated sequences. Although the first publication of a sequence gives-according to our rules-the genetic name of a gene, in some instances more commonly used names are given to avoid nomenclature problems and the use of ancient designations which are no longer used. In these cases the old designation is given as synonym. Thus sequences can be found either by the name or by synonyms given in LISTA. Each entry contains the genetic name, the mnemonic from the EMBL data bank, the codon bias, reference of the publication of the sequence, Chromosomal location as far as known, SWISSPROT and EMBL accession numbers. New entries will also contain the name from the systematic sequencing efforts. Since the release of LISTA4.1 we update the database continuously. To obtain more information on the included sequences, each entry has been screened against non-redundant nucleotide and protein data bank collections resulting in LISTA-HON and LISTA-HOP. This release includes reports from full Smith and Watermann peptide-level searches against a non-redundant protein sequence database. The LISTA data base can be linked to the associated data sets or to nucleotide and protein banks by the Sequence Retrieval System (SRS). The database is available by FTP and on World Wide Web.
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Affiliation(s)
- R Dölz
- Biocomputing, Biozentrum, Basel, Switzerland
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Val DL, Chapman-Smith A, Walker ME, Cronan JE, Wallace JC. Polymorphism of the yeast pyruvate carboxylase 2 gene and protein: effects on protein biotinylation. Biochem J 1995; 312 ( Pt 3):817-25. [PMID: 8554526 PMCID: PMC1136188 DOI: 10.1042/bj3120817] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In Saccharomyces cerevisiae there are two isoenzymes of pyruvate carboxylase (Pyc) encoded by separate genes designated PYC1 and PYC2. We report the isolation and sequencing of a PYC2 gene, and the localization of both genes on the physical map of S. cerevisiae. Comparison with the previously reported sequence [Stucka, Dequin, Salmon and Gancedo (1991) Mol. Gen. Genet. 229, 307-315] revealed significant differences within the open reading frame. The most notable difference was near the 3' end, where we found a single base deletion reducing the open reading frame by 15 bases. We have confirmed the C-terminus of Pyc2 encoded by the gene isolated here by expressing and purifying an 86-amino-acid biotin-domain peptide. In addition, we investigated the effects of the two changes in the Pyc2 biotin domain (K1155R substitution and Q1178P/five-amino-acid extension) on the extent of biotinylation in vivo by Escherichia coli biotin ligase, and compared the biotinylation of peptides containing these changes with that of two different-length Pyc1 biotin-domain peptides. The K1155R substitution had very little effect on biotinylation, but the five-amino-acid C-terminal extension to Pyc2 and the N-terminal extension to Pycl both improved biotinylation in vivo.
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Affiliation(s)
- D L Val
- Department of Biochemistry, University of Adelaide, Australia
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6
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Fichant GA, Quentin Y. A frameshift error detection algorithm for DNA sequencing projects. Nucleic Acids Res 1995; 23:2900-8. [PMID: 7659513 PMCID: PMC307128 DOI: 10.1093/nar/23.15.2900] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
During the determination of DNA sequences, frameshift errors are not the most frequent but they are the most bothersome as they corrupt the amino acid sequence over several residues. Detection of such errors by sequence alignment is only possible when related sequences are found in the databases. To avoid this limitation, we have developed a new tool based on the distribution of non-overlapping 3-tuples or 6-tuples in the three frames of an ORF. The method relies upon the result of a correspondence analysis. It has been extensively tested on Bacillus subtilis and Saccharomyces cerevisiae sequences and has also been examined with human sequences. The results indicate that it can detect frameshift errors affecting as few as 20 bp with a low rate of false positives (no more than 1.0/1000 bp scanned). The proposed algorithm can be used to scan a large collection of data, but it is mainly intended for laboratory practice as a tool for checking the quality of the sequences produced during a sequencing project.
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Affiliation(s)
- G A Fichant
- Institut de Génétique et Microbiologie, Université Paris-Sud, Orsay, France
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van der Rest ME, Kamminga AH, Nakano A, Anraku Y, Poolman B, Konings WN. The plasma membrane of Saccharomyces cerevisiae: structure, function, and biogenesis. Microbiol Rev 1995; 59:304-22. [PMID: 7603412 PMCID: PMC239363 DOI: 10.1128/mr.59.2.304-322.1995] [Citation(s) in RCA: 144] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The composition of phospholipids, sphingolipids, and sterols in the plasma membrane has a strong influence on the activity of the proteins associated or embedded in the lipid bilayer. Since most lipid-synthesizing enzymes in Saccharomyces cerevisiae are located in intracellular organelles, an extensive flux of lipids from these organelles to the plasma membrane is required. Although the pathway of protein traffic to the plasma membrane is similar to that of most of the lipids, the bulk flow of lipids is separate from vesicle-mediated protein transport. Recent advances in the analysis of membrane budding and membrane fusion indicate that the mechanisms of protein transport from the endoplasmic reticulum to the Golgi and from the Golgi to plasma membrane are similar. The majority of plasma membrane proteins transport solutes across the membrane. A number of ATP-dependent export systems have been detected that couple the hydrolysis of ATP to transport of molecules out of the cell. The hydrolysis of ATP by the plasma membrane H(+)-ATPase generates a proton motive force which is used to drive secondary transport processes. In S. cerevisiae, many substrates are transported by more than one system. Transport of monosaccharide is catalyzed by uniport systems, while transport of disaccharides, amino acids, and nucleosides is mediated by proton symport systems. Transport activity can be regulated at the level of transcription, e.g., induction and (catabolite) repression, but transport proteins can also be affected posttranslationally by a process termed catabolite inactivation. Catabolite inactivation is triggered by the addition of fermentable sugars, intracellular acidification, stress conditions, and/or nitrogen starvation. Phosphorylation and/or ubiquitination of the transport proteins has been proposed as an initial step in the controlled inactivation and degradation of the target enzyme. The use of artificial membranes, like secretory vesicles and plasma membranes fused with proteoliposomes, as model systems for studies on the mechanism and regulation of transport is evaluated.
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Affiliation(s)
- M E van der Rest
- Department of Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Haren, The Netherlands
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Sanyal A, Harington A, Herbert CJ, Groudinsky O, Slonimski PP, Tung B, Getz GS. Heat shock protein HSP60 can alleviate the phenotype of mitochondrial RNA-deficient temperature-sensitive mna2 pet mutants. MOLECULAR & GENERAL GENETICS : MGG 1995; 246:56-64. [PMID: 7529869 DOI: 10.1007/bf00290133] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
mna2, which belongs to the class I temperature-sensitive pet mutants that lose mitochondrial (mt)RNA at restrictive temperature, was shown by complementation and sequence determination to correspond to the gene coding for HSP60. Both mna2-1 and mna2-2, the two available alleles of mna2, have conservative single amino acid substitutions in the HSP60 gene. Valine substitutes for an alanine (position 47) in mna2-1, and an isoleucine substitutes for a valine (position 77) in mna2-2. These substitutions result in defects in respiration and in steady-state mtRNA accumulation. Wild-type hsp60 alleviates the mtRNA phenotype completely, while partially relieving the respiratory deficiency.
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Affiliation(s)
- A Sanyal
- Department of Medicine, University of Chicago, IL 60637
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Emmert DB, Stoehr PJ, Stoesser G, Cameron GN. The European Bioinformatics Institute (EBI) databases. Nucleic Acids Res 1994; 22:3445-9. [PMID: 7937043 PMCID: PMC308299 DOI: 10.1093/nar/22.17.3445] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
This paper describes the databases and services of the European Bioinformatics Institute (EBI). In collaboration with DDBJ and GenBank/NCBI, the EBI maintains and distributes the EMBL Nucleotide Sequence Database, Europe's primary nucleotide sequence data resource. The EBI also maintains and distributes the SWISS-PROT Protein Sequence Database, in collaboration with Amos Bairoch of the University of Geneva. Over thirty additional specialist molecular biology databases, as well as software and documentation of interest to molecular biologists, are also available. The EBI network services include database searching, entry retrieval, and sequence similarity searching facilities.
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Affiliation(s)
- D B Emmert
- European Bioinformatics Institute, Cambridge, UK
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10
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Dölz R, Mossé MO, Slonimski PP, Bairoch A, Linder P. LISTA, LISTA-HOP and LISTA-HON: a comprehensive compilation of protein encoding sequences and its associated homology databases from the yeast Saccharomyces. Nucleic Acids Res 1994; 22:3459-61. [PMID: 7937046 PMCID: PMC308302 DOI: 10.1093/nar/22.17.3459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
We continued our effort to make a comprehensive database (LISTA) for the yeast Saccharomyces cerevisiae. In this database each sequence has been attributed a single genetic name. In the case of duplicated sequences a simple method has been applied to distinguish between sequences of one and the same gene from non-allelic sequences of duplicated genes. If necessary, synonyms are given in the case of allelic duplicated sequences. Thus sequences can be found either by the name or by synonyms given in LISTA. Each entry contains the genetic name, the mnemonic from the EMBL data bank, the codon bias, reference of the publication of the sequence, Chromosomal location as far as known, Swissprot and EMBL accession numbers. To obtain more information on the included sequences, each entry has been screened against non-redundant nucleotide and protein data bank collections resulting in LISTA-HON and LISTA-HOP. The LISTA data base can be linked to the associated data sets or to nucleotide and protein banks by the Sequence Retrieval System (SRS).
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Affiliation(s)
- R Dölz
- Biocomputing, Biozentrum, Basel, Switzerland
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11
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Boles E, Zimmermann FK. Open reading frames in the antisense strands of genes coding for glycolytic enzymes in Saccharomyces cerevisiae. MOLECULAR & GENERAL GENETICS : MGG 1994; 243:363-8. [PMID: 8202080 DOI: 10.1007/bf00280465] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Open reading frames longer than 300 bases were observed in the antisense strands of the genes coding for the glycolytic enzymes phosphoglucose isomerase, phosphoglycerate mutase, pyruvate kinase and alcohol dehydrogenase I. The open reading frames on both strands are in codon register. It has been suggested that proteins coded in codon register by complementary DNA strands can bind to each other. Consequently, it was interesting to investigate whether the open reading frames in the antisense strands of glycolytic enzyme genes are functional. We used oligonucleotide-directed mutagenesis of the PGI1 phosphoglucose isomerase gene to introduce pairs of closely spaced base substitutions that resulted in stop codons in one strand and only silent replacements in the other. Introduction of the two stop codons into the PGI1 sense strand caused the same physiological defects as already observed for pgil deletion mutants. No detectable effects were caused by the two stop codons in the antisense strand. A deletion that removed a section from -31 bp to +109 bp of the PGI1 gene but left 83 bases of the 3' region beyond the antisense open reading frame had the same phenotype as a deletion removing both reading frames. A similar pair of deletions of the PYK1 gene and its antisense reading frame showed identical defects. Our own Northern experiments and those reported by other authors using double-stranded probes detected only one transcript for each gene. These observations indicate that the antisense reading frames are not functional. On the other hand, evidence is provided to show that the rather long reading frames in the antisense strands of these glycolytic enzyme genes could arise from the strongly selective codon usage in highly expressed yeast genes, which reduces the frequency of stop codons in the antisense strand.
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Affiliation(s)
- E Boles
- Institut für Mikrobiologie, Technische Hochschule Darmstadt, Germany
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Ozier-Kalogeropoulos O, Adeline MT, Yang WL, Carman GM, Lacroute F. Use of synthetic lethal mutants to clone and characterize a novel CTP synthetase gene in Saccharomyces cerevisiae. MOLECULAR & GENERAL GENETICS : MGG 1994; 242:431-9. [PMID: 8121398 DOI: 10.1007/bf00281793] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In the pyrimidine biosynthetic pathway, CTP synthetase catalyses the conversion of uridine 5'-triphosphate (UTP) to cytidine 5'-triphosphate (CTP). In the yeast Saccharomyces cerevisiae, the URA7 gene encoding this enzyme was previously shown to be nonessential for cell viability. The present paper describes the selection of synthetic lethal mutants in the CTP biosynthetic pathway that led us to clone a second gene, named URA8, which also encodes a CTP synthetase. Comparison of the predicted amino acid sequences of the products of URA7 and URA8 shows 78% identity. Deletion of the URA8 gene is viable in a haploid strain but simultaneous presence of null alleles both URA7 and URA8 is lethal. Based on the codon bias values for the two genes and the intracellular concentrations of CTP in strains deleted for one of the two genes, relative to the wild-type level, URA7 appears to be the major gene for CTP biosynthesis. Nevertheless, URA8 alone also allows yeast growth, at least under standard laboratory conditions.
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Affiliation(s)
- O Ozier-Kalogeropoulos
- Centre de Génétique Moléculaire du C.N.R.S., Laboratoire propre associé, Université Pierre et Marie Curie, Gif-sur-Yvette, France
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13
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Abstract
Regulation of ADE2 gene expression was investigated in the yeast S. cerevisiae using translational fusions between this gene and the lacZ gene from E. coli. Expression was repressed in the presence of adenine and slightly increased under amino-acid starvation conditions. The promoters of the ADE2 gene, and of other genes involved in adenine biosynthesis, contain the hexanucleotide sequence TGACTC. A search for the hexanucleotide TGACTC in yeast promoter sequences revealed that many genes not related to amino-acid biosynthesis contain such sequences. We show here that these elements play a crucial role in ADE2 regulation since mutations in two such elements drastically reduced gene expression. Maximal expression required the transcriptional activators Bas1, Bas2 and Gcn4, whereas Yap1 had only minor effects.
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Affiliation(s)
- A Stotz
- Department of Microbiology, Biozentrum, Basel, Switzerland
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14
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Supply P, Wach A, Goffeau A. Enzymatic properties of the PMA2 plasma membrane-bound H(+)-ATPase of Saccharomyces cerevisiae. J Biol Chem 1993. [DOI: 10.1016/s0021-9258(19)36578-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Affiliation(s)
- P P Slonimski
- Centre de génétique Moléculaire, Laboratoire Propre du CNRS associé à l'Université Pierre et Marie Curie, Gif sur Yvette, France
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Harington A, Herbert CJ, Tung B, Getz GS, Slonimski PP. Identification of a new nuclear gene (CEM1) encoding a protein homologous to a beta-keto-acyl synthase which is essential for mitochondrial respiration in Saccharomyces cerevisiae. Mol Microbiol 1993; 9:545-55. [PMID: 8412701 DOI: 10.1111/j.1365-2958.1993.tb01715.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
We have analysed a new gene, CEM1, from Saccharomyces cerevisiae. Inactivation of this gene leads to a respiratory-deficient phenotype. The deduced protein sequence shows strong similarities with beta-keto-acyl synthases or condensing enzymes. Typically, enzymes of this class are involved in the synthesis of fatty acids or similar molecules. An analysis of the mitochondrial lipids and fatty acids shows no major difference between the wild type and deleted strains, implying that the CEM1 gene product is not involved in the synthesis of the bulk fatty acids. Thus it is possible that the CEM1 protein is involved in the synthesis of a specialized molecule, probably related to a fatty acid, which is essential for mitochondrial respiration.
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Affiliation(s)
- A Harington
- Centre de Génétique Moléculaire du CNRS, Laboratoire propre associé à l'Université Pierre et Marie Curie, Gif-sur-Yvette, France
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17
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Linder P, Dölz R, Mossé MO, Lazowska J, Slonimski PP. LISTA, a comprehensive compilation of nucleotide sequences encoding proteins from the yeast Saccharomyces. Nucleic Acids Res 1993; 21:3001-2. [PMID: 8332521 PMCID: PMC309724 DOI: 10.1093/nar/21.13.3001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The amount of nucleotide sequence data is increasing exponentially. We therefore made an effort to make a comprehensive database (LISTA) for the yeast Saccharomyces cerevisiae. Each sequence has been attributed a single genetic name and in the case of allelic duplicated sequences, synonyms are given, if necessary. For the nomenclature we have introduced a standard principle for naming gene sequences based on priority rules. We have also applied a simple method to distinguish duplicated sequences of one and the same gene from non-allelic sequences of duplicated genes. By using these principles we have sorted out a lot of confusion in the literature and databanks. Along with the genetic name, the mnemonic from the EMBL databank, the codon bias, reference of the publication of the sequence and the EMBL accession numbers are included in each entry.
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Affiliation(s)
- P Linder
- Department of Microbiology, Biozentrum, Basel, Switzerland
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