SDC25, a CDC25-like gene which contains a RAS-activating domain and is a dispensable gene of Saccharomyces cerevisiae.

Abstract:

:In the yeast Saccharomyces cerevisiae, the CDC25 gene product activates adenylate cyclase through RAS1 and RAS2 gene products. We have recently described the cloning of a DNA fragment which suppresses the cdc25 mutation but not ras1, ras2, or cdc35 mutations. This fragment contains a 5'-truncated open reading frame which shares 47% identity with the C-terminal part of the CDC25 gene. We named the entire gene SDC25. In this paper, we report the cloning, sequencing, and characterization of the complete SDC25 gene. The SDC25 gene is located on the chromosome XII close to the centromere. It is transcribed into a 4-kb-long mRNA that contains an open reading frame of 1,251 codons. Homology with the CDC25 gene extends in the N-terminal part, although the degree of similarity is lower than in the C-terminal part. In contrast with the C-terminal part, the complete SDC25 gene was found not to suppress the CDC25 gene defect. A deletion in the N-terminal part restored the suppressing activity, a result which suggests the existence of a regulatory domain. The SDC25 gene was found to be dispensable for cell growth under usual conditions. No noticeable phenotype was found in the deleted strain.

journal_name

Mol Cell Biol

authors

Damak F,Boy-Marcotte E,Le-Roscouet D,Guilbaud R,Jacquet M

doi

10.1128/mcb.11.1.202

subject

Has Abstract

pub_date

1991-01-01 00:00:00

pages

202-12

issue

1

eissn

0270-7306

issn

1098-5549

journal_volume

11

pub_type

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