FUNCTION: SwissProt: Q06609 # May participate in a common DNA damage response pathway associated with the activation of homologous recombination and double-strand break repair. Binds to single and double stranded DNA and exhibits DNA-dependent ATPase activity. Underwinds duplex DNA and forms helical nucleoprotein filaments.
SIZE: 339 amino acids; 36966 Da
SUBUNIT: Interacts with BRCA1, BRCA2 and either directly or indirectly with p53. Interacts with XRCC3, RAD54L and RAD54B. Part of a complex with RAD51C and RAD51B. Interacts with RAD51AP1. Interacts with CHEK1/CHK1, and this may require prior phosphorylation of CHEK1.
SUBCELLULAR LOCATION: Nucleus. Note=Colocalizes with RAD51AP1 to multiple nuclear foci upon induction of DNA damage.
TISSUE SPECIFICITY: Highly expressed in testis and thymus, followed by small intestine, placenta, colon, pancreas and ovary. Weakly expressed in breast.
PTM: Phosphorylated. Phosphorylation of Thr-309 by CHEK1/CHK1 may enhance association with chromatin at sites of DNA damage and promote DNA repair by homologous recombination.DISEASE:SwissProt: Q06609 # Defects in RAD51 are associated with breast cancer (BC) [MIM:114480].
SIMILARITY: SwissProt: Q06609 ## Belongs to the recA family. RAD51 subfamily. & Contains 1 HhH domain.