Cloning and characterization of the SCS1 gene required for the expression of genes in yeast phospholipid synthesis.

Cloning and characterization of the SCS1 gene required for the expression of genes in yeast phospholipid synthesis. Research Abstract Details 

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Cloning and characterization of the SCS1 gene required for the expression of genes in yeast phospholipid synthesis. Abstract Text:

K Hosaka,J Nikawa,T Kodaki,S Yamashita,

A dominant mutation of Saccharomyces cerevisiae, CSE1, caused a decrease in the expression of the INO1 gene product, inositol-1-phosphate synthase. The residual activity was completely repressed by the addition of choline to the medium. A mutant carrying this mutation could not grow in the presence of choline unless inositol was added to the medium. Here we report a suppressor gene of the CSE1 mutation, SCS1 (suppressor of CSE1), which was cloned by complementation of CSE1 with a wild-type multicopy yeast genomic library. The cloned SCS1 gene contained an open reading frame which encoded 304 amino acid residues with a calculated molecular mass of 34,234 Da, and the sequence coincided with residues with a calculated molecular mass of 34,234 Da, and the sequence coincided with that of the INO2 gene. An scs1/ino2 null mutant constructed by gene replacement was viable, but auxotrophic for inositol and choline, and used for determination of the mRNA levels of various phospholipid-synthesizing enzymes. In agreement with the reported data for ino2 mutants the disruptant showed decreased expression of the INO1 and PSS genes, which are known to be regulated by inositol and choline. In addition, we newly found that the disruption of SCS1/INO2 also caused a decrease in the expression of the CKI, PEM1, and PEM2 genes, which we previously showed to belong to the inositol-choline-regulated gene family. These results confirm and strengthen the conclusion that the SCS1/INO2 gene is required for expression of inositol-choline-regulated genes in phospholipid synthesis.

Cloning and characterization of the SCS1 gene required for the expression of genes in yeast phospholipid synthesis. Publishing Authors By Initials

K Hosaka,J Nikawa,T Kodaki,S Yamashita,

For similar genetic processes: mutagenesis: suppression, genetic research abstracts see: genetic processes: mutagenesis: suppression, genetic research

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Cloning and characterization of the SCS1 gene required for the expression of genes in yeast phospholipid synthesis. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of biochemistry

VOLUME: 115

Page Numbers: 131-6

Journal Abbreviation: J. Biochem.

ISSN: 0021-924X

DAY: 19

MONTH: Jan

YEAR: 1994

Cloning and characterization of the SCS1 gene required for the expression of genes in yeast phospholipid synthesis. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 376600

Cloning and characterization of the SCS1 gene required for the expression of genes in yeast phospholipid synthesis. Keywords Mesh Terms:

KEYWORDS: Suppression, Genetic

MESH TERMS: metabolism

Chemical & Substance for Abstract: Cloning and characterization of the SCS1 gene required for the expression of genes in yeast phospholipid synthesis. Information

Substance Name: Inositol

Registry Number: 6917-35-7

Grant and Affiliation Information for Cloning and characterization of the SCS1 gene required for the expression of genes in yeast phospholipid synthesis.

AFFILIATION: Department of Biochemistry, Gunma University School of Medicine.

Country: JAPAN

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MEDLINETA: J Biochem

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ACCESSION NUMBER: D90460

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