Coagulation Factor IX

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** Coagulation factor IX (461 aa, ~52 kDa) is encoded by the human F9 gene. This protein plays a role in the intrinsic pathway of blood coagulation through the mediation of proteolysis that converts factor X into an active protease.

**Synonyms:** - COAGULATION FACTOR IX - Christmas Factor - Christmas Factor - EC 3.4.21.22 - F9 - FIX - Factor 9 - Factor IX - Factor IX - PTC - Plasma Thromboplastic Component - Plasma Thromboplastin Component