[Term] id: PR:000069796 name: collagen alpha-1(II) chain citrullinated 1 (human) def: "A collagen alpha-1(II) chain (human) that has been citrullinated on the residue at the position equivalent to Arg-515 of the amino acid sequence represented by UniProtKB:P02458-2. Example: UniProtKB:P02458-2, Arg-515, MOD:00219." [PRO:DNx, IEDB_epitope:538627] comment: Category=organism-modification. synonym: "hCOL2A1/Cit:1" EXACT PRO-short-label [PRO:DNx] synonym: "UniProtKB:P02458, Arg-515, MOD:00219" EXACT PRO-proteoform-std [PRO:DNx] synonym: "UniProtKB:P02458-2, Arg-515, MOD:00219" NARROW PRO-proteoform-std [PRO:DNx] is_a: PR:P02458 ! collagen alpha-1(II) chain (human) relationship: has_part MOD:00219 ! L-citrulline relationship: only_in_taxon NCBITaxon:9606 ! Homo sapiens