YEAST DNA RECOMBINATION AND REPAIR PROTEINS RAD1 AND RAD10 CONSTITUTE A COMPLEX INVIVO MEDIATED BY LOCALIZED HYDROPHOBIC DOMAINS

被引:54
作者
BARDWELL, AJ [1 ]
BARDWELL, L [1 ]
JOHNSON, DK [1 ]
FRIEDBERG, EC [1 ]
机构
[1] UNIV TEXAS, SW MED CTR, DEPT PATHOL, MOLEC PATHOL LAB, DALLAS, TX 75235 USA
关键词
D O I
10.1111/j.1365-2958.1993.tb01662.x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The Saccharomyces cerevisiae Rad1 and Rad10 proteins are required for damage-specific incision during nucleotide excision repair and also for certain mitotic recombination events between repeated sequences. Previously we have demonstrated that Rad1 and Rad10 form a specific complex in vitro. Using the 'two-hybrid' genetic assay system we now report that Rad1 and Rad10 proteins are subunits of a specific complex in the cell nucleus. The Rad10-binding domain of Rad1 protein maps to a localized region between amino acids 809-997. The Rad1-binding domain of Rad10 protein maps between amino acids 90-210. These domains are evolutionarily conserved and are hydrophobic in character. Although significant homology exists between Rad10 and the human-DNA-repair protein Ercc1 in this region, we were unable to detect any interaction between Ercc1 and Rad1 proteins. We conclude that Rad1 and Rad10 operate in DNA repair and mitotic recombination as a constitutive complex.
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收藏
页码:1177 / 1188
页数:12
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