The Reacquisition of Biotin Prototrophy in Saccharomyces cerevisiae Involved Horizontal Gene Transfer, Gene Duplication and Gene Clustering.

The Reacquisition of Biotin Prototrophy in Saccharomyces cerevisiae Involved Horizontal Gene Transfer, Gene Duplication and Gene Clustering. Research Abstract Details 

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The Reacquisition of Biotin Prototrophy in Saccharomyces cerevisiae Involved Horizontal Gene Transfer, Gene Duplication and Gene Clustering. Abstract Text:

Charles Hall,Fred S Dietrich,Charles Hall,Fred S Dietrich,

The synthesis of biotin, a vitamin required for many carboxylation reactions, is a variable trait in Saccharomyces cerevisiae. Many S. cerevisiae strains, including common laboratory strains, contain only a partial biotin synthesis pathway. We here report the identification of the first step necessary for the biotin synthesis pathway in S. cerevisiae. The biotin auxotroph strain S288c was able to grow on media lacking biotin when BIO1 and the known biotin synthesis gene BIO6 were introduced together on a plasmid vector. BIO1 is a paralog of YJR154W, a gene of unknown function and adjacent to BIO6. The nature of BIO1 illuminates the remarkable evolutionary history of the biotin biosynthesis pathway in S. cerevisiae. This pathway appears to have been lost in an ancestor of S. cerevisiae and subsequently rebuilt by a combination of horizontal gene transfer and gene duplication followed by neofunctionalization. Unusually, for S. cerevisiae, most of the genes required for biotin synthesis in S. cerevisiae are grouped in two subtelomeric gene clusters. The BIO1-BIO6 functional cluster is an example of a cluster of genes of "dispensable function," one of the few categories of genes in S. cerevisiae that are positionally clustered.

The Reacquisition of Biotin Prototrophy in Saccharomyces cerevisiae Involved Horizontal Gene Transfer, Gene Duplication and Gene Clustering. Publishing Authors By Initials

C Hall,FS Dietrich,C Hall,FS Dietrich,

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The Reacquisition of Biotin Prototrophy in Saccharomyces cerevisiae Involved Horizontal Gene Transfer, Gene Duplication and Gene Clustering. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Genetics

VOLUME: 177

Page Numbers: 2293-307

Journal Abbreviation: Genetics

ISSN: 0016-6731

DAY: 12

MONTH: Dec

YEAR: 2007

The Reacquisition of Biotin Prototrophy in Saccharomyces cerevisiae Involved Horizontal Gene Transfer, Gene Duplication and Gene Clustering. Information

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LANGUAGE: eng

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Grant and Affiliation Information for The Reacquisition of Biotin Prototrophy in Saccharomyces cerevisiae Involved Horizontal Gene Transfer, Gene Duplication and Gene Clustering.

AFFILIATION: Institute for Genome Sciences and Policy, Duke University, Durham, North Carolina 27710.

Country: United States

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MEDLINETA: Genetics

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