[Term] id: PR:000018797 name: collagen alpha-1(I) chain, signal peptide removed form def: "A collagen alpha-1(I) chain that has had the signal peptide removed." [PRO:DNx] comment: Category=modification. synonym: "COL1A1/SigPep-" EXACT PRO-short-label [PRO:DNx] intersection_of: PR:000003264 ! collagen alpha-1(I) chain intersection_of: lacks_part SO:0000418 ! signal_peptide