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Schematic diagram indicating the domain structures of the ATM and Rad51 proteins. The autophosphorylation sites, HEAT (Huntington's elongation factor 3, a subunit of protein phosphatase 2A, TOR1) repeats, FAT (FRAP/ATM/TRRAP) domain, FATC (FAT C-terminal) domain in ATM, and Walker's box A and B domains (ATP binding) in Rad51 are also shown.
