[Term] id: PR:000021099 name: sperm protamine P1, initiator methionine removed form def: "A sperm protamine P1 that has had the initiator methionine removed." [PRO:DNx] comment: Category=modification. synonym: "PRM1/InitMet-" EXACT PRO-short-label [PRO:DNx] intersection_of: PR:000013249 ! sperm protamine P1 intersection_of: lacks_part PR:000021937 ! initiator methionine