[Term] id: PR:000035934 name: coagulation factor IXa heavy chain def: "A coagulation factor IX that corresponds to the C-terminal region containing the Trypsin (Pfam:PF00089) domain after proteolytic processing by factor XIa. Example: UniProtKB:P00740, 227-461." [PMID:2994716, Reactome:R-HSA-140895, Reactome:R-HSA-158225] comment: Category=modification. synonym: "F9/Clv:aH" EXACT PRO-short-label [PRO:DAN] is_a: PR:000007303 ! coagulation factor IX relationship: output_of GO:0016485 ! protein processing