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The absence of the Isw2p–Itc1p chromatin‐remodelling complex induces mating type‐specific and Flo11p‐independent invasive growth of Saccharomyces cerevisiae
Author(s) -
Trachtulcová Petra,
Frýdlová Ivana,
Janatová Ivana,
Hašek Jiří
Publication year - 2004
Publication title -
yeast
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.923
H-Index - 102
eISSN - 1097-0061
pISSN - 0749-503X
DOI - 10.1002/yea.1105
Subject(s) - biology , saccharomyces cerevisiae , mating type , derepression , chromatin , gene , genetics , phenotype , chromatin remodeling , microbiology and biotechnology , gene expression , psychological repression
The Isw2p–Itc1p chromatin remodelling complex of Saccharomyces cerevisiae is a member of the ISWI class of ATPases with a nucleosome spacing activity, involved in regulation of expression of a broad spectrum of genes. Its absence causes derepression of a‐specific genes and aberrant morphology in α‐mating type cells. We report here that the deletion of the ISW2 gene in the originally non‐invasive BY strain induces mating type‐specific invasive growth strongly affected by nitrogen starvation. Although the Flo11 protein was postulated to be critical for haploid invasive growth, we showed that the invasive growth caused by the isw2 and itc1 deletions in α‐mating type cells was Flo11p‐independent. This type of invasive growth was proved to be a consequence of the activation of the pheromone response pathway. Our results suggest that Isw2 and Itc1 proteins do not have the same impact on the described phenomenon. Copyright © 2004 John Wiley & Sons, Ltd.