[Term] id: PR:000026716 name: 26S proteasome non-ATPase regulatory subunit 4 isoform 1, initiator methionine removed form def: "A 26S proteasome non-ATPase regulatory subunit 4 isoform 1 that has had the initiator methionine removed." [PRO:DNx] comment: Category=modification. synonym: "PSMD4/iso:1/InitMet-" EXACT PRO-short-label [PRO:DNx] intersection_of: PR:000002251 ! 26S proteasome non-ATPase regulatory subunit 4 isoform 1 intersection_of: lacks_part PR:000021937 ! initiator methionine