[Term] id: PR:000024743 name: small ribosomal subunit protein bS21, initiator methionine removed form def: "A small ribosomal subunit protein bS21 that has had the initiator methionine removed." [PRO:DNx] comment: Category=modification. synonym: "rpsU/InitMet-" EXACT PRO-short-label [PRO:DNx] intersection_of: PR:000023874 ! small ribosomal subunit protein bS21 intersection_of: lacks_part PR:000021937 ! initiator methionine