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Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis
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| Zeitschriftentitel: | Journal of Bacteriology |
|---|---|
| Personen und Körperschaften: | , , , , , |
| In: | Journal of Bacteriology, 170, 1988, 4, S. 1878-1886 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Society for Microbiology
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| Schlagwörter: |
| author_facet |
Klig, L S Homann, M J Kohlwein, S D Kelley, M J Henry, S A Carman, G M Klig, L S Homann, M J Kohlwein, S D Kelley, M J Henry, S A Carman, G M |
|---|---|
| author |
Klig, L S Homann, M J Kohlwein, S D Kelley, M J Henry, S A Carman, G M |
| spellingShingle |
Klig, L S Homann, M J Kohlwein, S D Kelley, M J Henry, S A Carman, G M Journal of Bacteriology Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis Molecular Biology Microbiology |
| author_sort |
klig, l s |
| spelling |
Klig, L S Homann, M J Kohlwein, S D Kelley, M J Henry, S A Carman, G M 0021-9193 1098-5530 American Society for Microbiology Molecular Biology Microbiology http://dx.doi.org/10.1128/jb.170.4.1878-1886.1988 <jats:p>A Saccharomyces cerevisiae mutant (cdg1 mutation) was isolated on the basis of an inositol excretion phenotype and exhibited pleiotropic deficiencies in phospholipid biosynthesis. Genetic analysis of the mutant confirmed that the cdg1 mutation represents a new genetic locus and that a defect in a single gene was responsible for the Cdg1 phenotype. CDP-diacylglycerol synthase activity in mutant haploid cells was 25% of the wild-type derepressed level. Biochemical and immunoblot analyses revealed that the defect in CDP-diacylglycerol synthase activity in the cdg1 mutant was due to a reduced level of the CDP-diacylglycerol synthase Mr-56,000 subunit rather than to an alteration in the enzymological properties of the enzyme. This defect resulted in a reduced rate of CDP-diacylglycerol synthesis, an elevated phosphatidate content, and alterations in overall phospholipid synthesis. Unlike wild-type cells, CDP-diacylglycerol synthase was not regulated in response to water-soluble phospholipid precursors. The cdg1 lesion also caused constitutive expression of inositol-1-phosphate synthase and elevated phosphatidylserine synthase. Phosphatidylinositol synthase was not affected in the cdg1 mutant.</jats:p> Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis Journal of Bacteriology |
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American Society for Microbiology, 1988 |
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American Society for Microbiology, 1988 |
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Journal of Bacteriology |
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| title |
Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis |
| title_unstemmed |
Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis |
| title_full |
Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis |
| title_fullStr |
Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis |
| title_full_unstemmed |
Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis |
| title_short |
Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis |
| title_sort |
saccharomyces cerevisiae mutant with a partial defect in the synthesis of cdp-diacylglycerol and altered regulation of phospholipid biosynthesis |
| topic |
Molecular Biology Microbiology |
| url |
http://dx.doi.org/10.1128/jb.170.4.1878-1886.1988 |
| publishDate |
1988 |
| physical |
1878-1886 |
| description |
<jats:p>A Saccharomyces cerevisiae mutant (cdg1 mutation) was isolated on the basis of an inositol excretion phenotype and exhibited pleiotropic deficiencies in phospholipid biosynthesis. Genetic analysis of the mutant confirmed that the cdg1 mutation represents a new genetic locus and that a defect in a single gene was responsible for the Cdg1 phenotype. CDP-diacylglycerol synthase activity in mutant haploid cells was 25% of the wild-type derepressed level. Biochemical and immunoblot analyses revealed that the defect in CDP-diacylglycerol synthase activity in the cdg1 mutant was due to a reduced level of the CDP-diacylglycerol synthase Mr-56,000 subunit rather than to an alteration in the enzymological properties of the enzyme. This defect resulted in a reduced rate of CDP-diacylglycerol synthesis, an elevated phosphatidate content, and alterations in overall phospholipid synthesis. Unlike wild-type cells, CDP-diacylglycerol synthase was not regulated in response to water-soluble phospholipid precursors. The cdg1 lesion also caused constitutive expression of inositol-1-phosphate synthase and elevated phosphatidylserine synthase. Phosphatidylinositol synthase was not affected in the cdg1 mutant.</jats:p> |
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| author | Klig, L S, Homann, M J, Kohlwein, S D, Kelley, M J, Henry, S A, Carman, G M |
| author_facet | Klig, L S, Homann, M J, Kohlwein, S D, Kelley, M J, Henry, S A, Carman, G M, Klig, L S, Homann, M J, Kohlwein, S D, Kelley, M J, Henry, S A, Carman, G M |
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| description | <jats:p>A Saccharomyces cerevisiae mutant (cdg1 mutation) was isolated on the basis of an inositol excretion phenotype and exhibited pleiotropic deficiencies in phospholipid biosynthesis. Genetic analysis of the mutant confirmed that the cdg1 mutation represents a new genetic locus and that a defect in a single gene was responsible for the Cdg1 phenotype. CDP-diacylglycerol synthase activity in mutant haploid cells was 25% of the wild-type derepressed level. Biochemical and immunoblot analyses revealed that the defect in CDP-diacylglycerol synthase activity in the cdg1 mutant was due to a reduced level of the CDP-diacylglycerol synthase Mr-56,000 subunit rather than to an alteration in the enzymological properties of the enzyme. This defect resulted in a reduced rate of CDP-diacylglycerol synthesis, an elevated phosphatidate content, and alterations in overall phospholipid synthesis. Unlike wild-type cells, CDP-diacylglycerol synthase was not regulated in response to water-soluble phospholipid precursors. The cdg1 lesion also caused constitutive expression of inositol-1-phosphate synthase and elevated phosphatidylserine synthase. Phosphatidylinositol synthase was not affected in the cdg1 mutant.</jats:p> |
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| imprint | American Society for Microbiology, 1988 |
| imprint_str_mv | American Society for Microbiology, 1988 |
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| spelling | Klig, L S Homann, M J Kohlwein, S D Kelley, M J Henry, S A Carman, G M 0021-9193 1098-5530 American Society for Microbiology Molecular Biology Microbiology http://dx.doi.org/10.1128/jb.170.4.1878-1886.1988 <jats:p>A Saccharomyces cerevisiae mutant (cdg1 mutation) was isolated on the basis of an inositol excretion phenotype and exhibited pleiotropic deficiencies in phospholipid biosynthesis. Genetic analysis of the mutant confirmed that the cdg1 mutation represents a new genetic locus and that a defect in a single gene was responsible for the Cdg1 phenotype. CDP-diacylglycerol synthase activity in mutant haploid cells was 25% of the wild-type derepressed level. Biochemical and immunoblot analyses revealed that the defect in CDP-diacylglycerol synthase activity in the cdg1 mutant was due to a reduced level of the CDP-diacylglycerol synthase Mr-56,000 subunit rather than to an alteration in the enzymological properties of the enzyme. This defect resulted in a reduced rate of CDP-diacylglycerol synthesis, an elevated phosphatidate content, and alterations in overall phospholipid synthesis. Unlike wild-type cells, CDP-diacylglycerol synthase was not regulated in response to water-soluble phospholipid precursors. The cdg1 lesion also caused constitutive expression of inositol-1-phosphate synthase and elevated phosphatidylserine synthase. Phosphatidylinositol synthase was not affected in the cdg1 mutant.</jats:p> Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis Journal of Bacteriology |
| spellingShingle | Klig, L S, Homann, M J, Kohlwein, S D, Kelley, M J, Henry, S A, Carman, G M, Journal of Bacteriology, Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis, Molecular Biology, Microbiology |
| title | Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis |
| title_full | Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis |
| title_fullStr | Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis |
| title_full_unstemmed | Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis |
| title_short | Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis |
| title_sort | saccharomyces cerevisiae mutant with a partial defect in the synthesis of cdp-diacylglycerol and altered regulation of phospholipid biosynthesis |
| title_unstemmed | Saccharomyces cerevisiae mutant with a partial defect in the synthesis of CDP-diacylglycerol and altered regulation of phospholipid biosynthesis |
| topic | Molecular Biology, Microbiology |
| url | http://dx.doi.org/10.1128/jb.170.4.1878-1886.1988 |