>1IK9_1|Chains A, B|DNA REPAIR PROTEIN XRCC4|Homo sapiens (9606) MERKISRIHLVSEPSITHFLQVSWEKTLESGFVITLTDGHSAWTGTVSESEISQEADDMAMEKGKYVGELRKALLSGAGPADVYTFNFSKESAYFFFEKNLKDVSFRLGSFNLEKVENPAEVIRELIAYALDTIAENQAKNEHLQKENERLLRDWNDVQGRFEKAVSAKEALETDLYKRFILVLNEKKTKIRSLHNKLLNAAQEREKDIKQEG >1IK9_2|Chain C|DNA LIGASE IV|Homo sapiens (9606) PSTKEHFAREYDCYGDSYFIDTDLNQLKEVFSGIKNS