Hirudin

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== Function ==
== Function ==
[[Hirudin]] (Hir) is a powerful anticoagulant which is found in the leech salivary glands. It is an inhibitor of thrombin (Thr) which converts [[Fibrinogen|fibrinogen]] to [[Fibrin|fibrin]] upon blood clotting<ref>PMID:9579630</ref>. Thrombin is produced upon enzymatic cleavage of prothrombin (ProThr). '''Hirugen''' (Hirg) is a dodecapeptide of the C-terminal of Hir (sequence NDGDFEEIPEEYL). For additional details see [[Sean Swale/Human Thrombin Inhibitor]].
[[Hirudin]] (Hir) is a powerful anticoagulant which is found in the leech salivary glands. It is an inhibitor of thrombin (Thr) which converts [[Fibrinogen|fibrinogen]] to [[Fibrin|fibrin]] upon blood clotting<ref>PMID:9579630</ref>. Thrombin is produced upon enzymatic cleavage of prothrombin (ProThr). '''Hirugen''' (Hirg) is a dodecapeptide of the C-terminal of Hir (sequence NDGDFEEIPEEYL). For additional details see [[Sean Swale/Human Thrombin Inhibitor]].
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== Relevance ==
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Hirudin is an effective local treatment in patients with mild to moderate bruises<ref>PMID:11863317</ref>. Hirudin was approved as treatment of heparin-induced thrombocytopenia and unstable angina<ref>PMID:8198374</ref>.
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== 3D Structures of Hirudin ==
== 3D Structures of Hirudin ==

Revision as of 09:11, 22 March 2016

Hirudin (wheat) complex with thrombin small subunit (aqua) and large subunit (red) (PDB entry 3htc)

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3D Structures of Hirudin

Updated on 22-March-2016

References

  1. Fenton JW 2nd, Ofosu FA, Brezniak DV, Hassouna HI. Thrombin and antithrombotics. Semin Thromb Hemost. 1998;24(2):87-91. PMID:9579630 doi:http://dx.doi.org/10.1055/s-2007-995828
  2. Stamenova PK, Marchetti T, Simeonov I. Efficacy and safety of topical hirudin (Hirudex): a double-blind, placebo-controlled study. Eur Rev Med Pharmacol Sci. 2001 Mar-Apr;5(2):37-42. PMID:11863317
  3. Johnson PH. Hirudin: clinical potential of a thrombin inhibitor. Annu Rev Med. 1994;45:165-77. PMID:8198374 doi:http://dx.doi.org/10.1146/annurev.med.45.1.165

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Michal Harel, Alexander Berchansky, Joel L. Sussman

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