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The vitamin K-dependent proteins: an update

G Ferland1

  • 1Université de Montréal, Department of Nutrition, Québec, Canada.

Nutrition Reviews
|September 15, 1998
PubMed
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Vitamin K is essential for blood clotting and activates proteins beyond hemostasis. Recent discoveries reveal vitamin K-dependent proteins in various tissues, highlighting broader physiological roles.

Area of Science:

  • Biochemistry
  • Physiology
  • Molecular Biology

Background:

  • Vitamin K is traditionally recognized for its crucial role in blood coagulation.
  • Emerging research indicates vitamin K's involvement in activating proteins unrelated to hemostasis.
  • Over the past two decades, numerous vitamin K-dependent proteins have been identified.

Purpose of the Study:

  • To summarize the expanding understanding of vitamin K's functions beyond coagulation.
  • To highlight the discovery and distribution of vitamin K-dependent proteins in various tissues.
  • To underscore the physiological significance of these newly identified proteins.

Main Methods:

  • Literature review of studies on vitamin K and its dependent proteins.
  • Analysis of protein isolation data from various human tissues.

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  • Synthesis of findings on the physiological roles of vitamin K-dependent proteins.

    • Main Results:

    • Vitamin K-dependent proteins are present in bone, cartilage, kidney, and atheromatous plaque.
    • These proteins are involved in physiological processes not related to blood clotting.
    • The precise functions of many of these proteins are still under investigation.

    Conclusions:

    • Vitamin K has broader physiological functions than previously understood.
    • The identification of vitamin K-dependent proteins in diverse tissues signifies their importance.
    • Further research is needed to elucidate the specific mechanisms and roles of these proteins.