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Ubiquitin binding region This family contains repetitive element (RE) from a subgroup of HECT E3 ubiquitin ligases and the Y-family translesion polymerases, including human HUWE1 and Arabidopsis UPL1. Each of these repetitive elements are approximately 20 amino acids in length and contain two predicted helical segments separated by a Leu-Pro motif. The REs from the Y-family polymerases were shown to bind ubiquitin and were the basis for a novel ubiquitin-binding domain called the ubiquitin-binding motif (UBM).
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Jiyao W et al.(2023). "The conserved domain database in 2023.",