. "dataSource ADDED by a reasoner: http://pid.nci.nih.gov/biopaxpid_4"^^ . . . "Y2"^^ . "PSMB8"^^ . "UniProt:P28062 PSMB8"^^ . "LMP7"^^ . "PSMB5i"^^ . "RING10"^^ . .