Coagulation Factor XI

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

**Definition:** Coagulation factor XI (625 aa, ~70 kDa) is encoded by the human F11 gene. This protein is involved in the proteolytic activation of coagulation factor IX.

**Synonyms:** - EC 3.4.21.27 - F11 - FXI - Factor XI - PTA - Plasma Thromboplastin Antecedent