Prekallikrein

Prekallikrein (PK), also known as Fletcher factor, is an 85,000 Mr serine protease that complexes with high-molecular-weight kininogen. PK is the precursor of plasma kallikrein, which is a serine protease that activates kinins. PK is cleaved to produce kallikrein by activated Factor XII (Hageman factor).[1]

  1. ^ Goodnight, S.H.; Hathaway, W.E. (2001). Disorders of Hemostasis & Thrombosis: A Clinical Guide (2nd ed.). McGraw Hill Professional. ISBN 978-0071348348.