Yeast DNA recombination and repair proteins Rad1 and Rad10 constitute a complex in vivo mediated by localized hydrophobic domains.
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.
Bardwell
A J
AJ
Department of Pathology, University of Texas Southwestern Medical Center, Dallas.
Bardwell
L
L
Johnson
D K
DK
Friedberg
E C
EC
D001483:Base Sequence; D004260:DNA Repair / Q000235:genetics*; D045643:DNA Repair Enzymes; D004271:DNA, Fungal / Q000235:genetics*; D004268:DNA-Binding Proteins; D004720:Endonucleases; D005656:Fungal Proteins / Q000378:metabolism*; D015966:Gene Expression Regulation, Fungal; D005800:Genes, Fungal; D006801:Humans; D008969:Molecular Sequence Data; D011506:Proteins / Q000235:genetics; D011993:Recombinant Fusion Proteins / Q000378:metabolism; D011995:Recombination, Genetic / Q000235:genetics*; D012441:Saccharomyces cerevisiae / Q000235:genetics*; D029701:Saccharomyces cerevisiae Proteins; D015719:Single-Strand Specific DNA and RNA Endonucleases
D004271:DNA, Fungal; D004268:DNA-Binding Proteins; D005656:Fungal Proteins; D011506:Proteins; D011993:Recombinant Fusion Proteins; D029701:Saccharomyces cerevisiae Proteins; C071447:ERCC1 protein, human; D004720:Endonucleases; C069266:RAD1 protein, S cerevisiae; C064162:RAD10 protein, S cerevisiae; D015719:Single-Strand Specific DNA and RNA Endonucleases; D045643:DNA Repair Enzymes