Abstract：
:A gene encoding a Ustilago maydis Rad51 orthologue has been isolated, rad51-1, a mutant constructed by disrupting the gene, was as sensitive to killing by ultraviolet light and gamma radiation as the rec2-1 mutant and slightly more sensitive to killing by methyl methanesulfonate. There was no suppression of killing by ultraviolet light when a rec2-1 strain was transformed with a multicopy plasmid containing RAD51, nor was there suppression when rad51-1 was transformed with a multicopy plasmid containing REC2. Recombination proficiency as measured by a gap repair assay was diminished in both rec2-1 and rad51-1 strains. In rec2-1 the frequency of recombination was decreased, but the spectrum of events was similar to that observed in wild type, while in rad51-1 the frequency as well as the spectrum of recombination events were different. Studies with the rec2-1 rad51-1 double mutant indicated that there was epistasis in the action of REC2 and RAD51 in certain repair and recombination functions, but some measure of independent action in other functions.
journal_name
Geneticsjournal_title
Geneticsauthors
Ferguson DO,Rice MC,Rendi MH,Kotani H,Kmiec EB,Holloman WKsubject
Has Abstractpub_date
1997-02-01 00:00:00pages
243-51issue
2eissn
0016-6731issn
1943-2631journal_volume
145pub_type
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