The SRD2 gene is involved in Saccharomyces cerevisiae morphogenesis.

Abstract:

:Saccharomyces cerevisiaepresents two alternative vegetative forms of growth, switching between yeast forms to pseudohyphal forms depending on the specific environmental conditions. To identify genes involved in cell wall morphogenesis, a haploid S. cerevisiae monomorphic mutant, W27, which exhibits pseudohyphal growth in the absence of the normal external signals that induce the formation of filamentous forms, was characterized. S. cerevisiaeW27 did not demonstrate agar-invasive growth, a characteristic of most filamentous strains. The mutant wall had no obvious alterations with respect to mannan and glucan content, but had three times more chitin than the parental strain. This produced an increase in the amount of proteins linked covalently to chitin. The same protein species, however, were released from the cell walls of the mutant and the parental strain. The W27 mutation was complemented with a genomic library and the SRD2/ECM23 gene was identified as the complementing ORF. Transformation of S. cerevisiaeW27 with the Ycplac33 vector carrying the SRD2 gene produced the original phenotype. These results suggest that the SRD2gene acts as a negative regulator of pseudohyphal growth.

journal_name

Arch Microbiol

journal_title

Archives of microbiology

authors

Cañizares JV,Pallotti C,Saínz-Pardo I,Iranzo M,Mormeneo S

doi

10.1007/s00203-002-0400-z

keywords:

subject

Has Abstract

pub_date

2002-04-01 00:00:00

pages

352-7

issue

4

eissn

0302-8933

issn

1432-072X

journal_volume

177

pub_type

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