. . . . . . . "Synthesis of active ubiquitin: roles of E1 and E2 enzymes"@en . . . . . . . . . . . . "R-HSA-8866652" . . . . . . "An instance of the biological pathway in Homo sapiens with Reactome ID (R-HSA-8866652)"@en . . . . . . . . . . . . "Synthesis of active ubiquitin: roles of E1 and E2 enzymes"@en . . . "Synthesis of active ubiquitin: roles of E1 and E2 enzymes"@en . . . . . . . . . . . . . . . . . . . . . . .