Protein Domain : DNA repair protein Rad52/59/22 superfamily IPR042525

Type	Homologous_superfamily
Description	The DNA single-strand annealing proteins (SSAPs), such as RecT, Red-beta, ERF and Rad52, function in RecA-dependent and RecA-independent DNA recombination pathways. This superfamily includes proteins related to Rad52. These proteins contain two helix-hairpin-helix motifs [ ].Rad52 was identified in Saccharomyces cerevisiae (Baker's yeast) as a component of the homologous recombination repair pathway and to play an important role in both meiotic and mitotic recombination. The human protein is highly homologous in both structure and function. In the presence of absence of DNA, Rad52 forms ring-shaped oligomers which bind both single and double stranded DNA, stimulating annealing of complimentary DNA strands and promoting ligation of both cohesive and blunt-end fragments. Rad52 may act as a recombination mediator, optimising catalysis of strand exchange by the Rad51 protein.A C-terminal self-association domain has been identified that mediates formation of higher order oligomers of Rad52 rings. Formation of these oligomers may be important for interaction with more than one DNA molecule [ ].
Short Name	Rad52_Rad59_Rad22_sf