proteasome 26S subunit ubiquitin receptor, non-ATPase 4 S5A AF-1 AF Rpn10 proteasome (prosome, macropain) 26S subunit, non-ATPase, 4 proteasome 26S subunit, non-ATPase 4 ASF MCB1 pUB-R5 26S proteasome non-ATPase regulatory subunit 4 26S proteasome regulatory subunit S5A S5a/antisecretory factor protein angiocidin antisecretory factor 1 multiubiquitin chain-binding protein 26S proteasome regulatory subunit RPN10 Antisecretory factor 1 Multiubiquitin chain-binding protein