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Substance Name: Prekallikrein
RN: 9055-02-1


  • A plasma protein which is the precursor of kallikrein. Plasma that is deficient in prekallikrein has been found to be abnormal in thromboplastin formation, kinin generation, evolution of a permeability globulin, and plasmin formation. The absence of prekallikrein in plasma leads to Fletcher factor deficiency, a congenital disease.

Molecular Formula

  • Unspecified
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Names and Synonyms

Name of Substance

  • Prekallikrein

MeSH Heading

  • Prekallikrein


  • Fletcher factor
  • Plasma prokallikrein

Systematic Name

  • Kallikreinogen

Registry Numbers

CAS Registry Number

  • 9055-02-1

System Generated Number

  • 0009055021