XRCC2（X-ray repair cross complementing 2），癌症关联基因，基因ID：7516，该基因编码reca/rad51相关蛋白家族的一个成员，参与同源重组以维持染色体稳定性和修复dna损伤。该基因通过同源重组参与dna双链断裂的修复，并在功能上与中国仓鼠irs1互补，irs1是一种修复缺陷突变体，对多种不同的dna损伤剂表现出超敏反应。[由RefSeq提供，2008年7月]This gene encodes a member of the RecA/Rad51-related protein family that participates in homologous recombination to maintain chromosome stability and repair DNA damage. This gene is involved in the repair of DNA double-strand breaks by homologous recombination and it functionally complements Chinese hamster irs1， a repair-deficient mutant that exhibits hypersensitivity to a number of different DNA-damaging agents. [provided by RefSeq， Jul 2008]。