https://www.ncbi.nlm.nih.gov/Structure/pdb/9B5H
9B5H: Ubiquitin E1-Ub-E2 tetrahedral transthiolation intermediate mimic (doubly Ub-loaded) -...
Large ribosomal subunit protein eL40BUbiquitinUbiquitin-activating enzyme E1 1Ubiquitin-conjugating enzyme E2 4ADENOSINE MONOPHOSPHATEMAGNESIUM...
ubiquitin