UbcH7/UBE2L3 is a unique ubiquitin-conjugating E2 enzyme that cooperates with HECT-type and RBR family E3 ligases and lacks intrinsic E3-independent reactivity with lysine. It uniquely works with RBR family E3 enzymes such as PRKN, RNF31 and ARIH1, acting like a RING-HECT hybrid. UbcH7/UBE2L3 Protein, Human is the recombinant human-derived UbcH7/UBE2L3 protein, expressed by E. coli , with tag free.