PCNA monoubiquitinated on lysine residue K164 (MonoUb:K164-PCNA) is bound by ISG15 E3 ligase TRIM25 (EFP) in complex with ISG15 E2 conjugating enzyme UBE2L6 (UBCH8) (Park et al. 2014).
Park, JM, Yang, SW, Yu, KR, Ka, SH, Lee, SW, Seol, JH, Jeon, YJ, Chung, CH
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