[Term] id: PR:000003370 name: collagen alpha-1(I) chain isoform 1 def: "A collagen alpha-1(I) chain that is a translation product of some mRNA whose exon structure and start site selection renders it capable of giving rise to a protein with the amino acid sequence represented by UniProtKB:P02452-1 or a 1:1 ortholog thereof." [PRO:CNA] comment: Category=sequence. synonym: "COL1A1/iso:1" EXACT PRO-short-label [PRO:DNx] property_value: has_archetype PR:P02452-1 is_a: PR:000003264 ! collagen alpha-1(I) chain