Extragenic revertants of rad50, a yeast mutation causing defects in recombination and repair.

Abstract:

:The RAD50 gene in yeast is required for recombination-repair (i.e., the double strand break repair pathway) in mitosis, and for meiotic recombination and sporulation. Both of these processes are complex and seem likely to require a relatively large number of gene products. In order to help define other genes required for recombination and repair processes in yeast, we have isolated extragenic revertants of rad50-4 which restore the ability to grow in the presence of MMS. Evidence from segregation indicates the extragenic revertants fall into at least five loci. Two of them reduce sporulation and spore viability at high temperature; another mutation confers a spontaneous hyperrec phenotype on mitotic cells. Thus, at least three revertants are candidates for mutations which affect recombination functions.

journal_name

Curr Genet

journal_title

Current genetics

authors

Malone RE,Jordan K,Wardman W

doi

10.1007/BF00434050

subject

Has Abstract

pub_date

1985-01-01 00:00:00

pages

453-61

issue

6

eissn

0172-8083

issn

1432-0983

journal_volume

9

pub_type

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