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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1977 Sep;74(9):3691–3695. doi: 10.1073/pnas.74.9.3691

Resolution of prostaglandin endoperoxide synthase and thromboxane synthase of human platelets.

S Hammarström, P Falardeau
PMCID: PMC431690  PMID: 410024

Abstract

Thromboxane synthase was localized to the microsomes of human platelets. The enzyme was insensitive to sulfhydryl reagents and thiols but was inhibited by 12L-hydroperoxy-5, 8, 10, 14-eicosatetraenoic acid (concentration for 50% inhibition = 0.1 mM). Treatment of microsomes with Triton X-100 solubilized the enzymes that catalyze the conversion of arachidonic acid to thromboxane B2. The solubilized material was resolved by DEAE-cellulose chromatography into two components, one converting arachidonic acid to prostaglandins G2 and H2 and the other converting prostaglandin H2 to thromboxane B2.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Anderson P., Slorach S. A., Uvnäs B. 5-HT storage in rat and rabbit blood platelets: the separation of ATP-containing and sulphomucopolysaccharide-containing granules. Acta Physiol Scand. 1974 Mar;90(3):522–532. doi: 10.1111/j.1748-1716.1974.tb05617.x. [DOI] [PubMed] [Google Scholar]
  2. Barber A. J., Jamieson G. A. Isolation and characterization of plasma membranes from human blood platelets. J Biol Chem. 1970 Dec 10;245(23):6357–6365. [PubMed] [Google Scholar]
  3. Barber A. J., Pepper D. S., Jamieson G. A. A comparison of methods for platelet lysis and the isolation of platelet membranes. Thromb Diath Haemorrh. 1971 Aug 31;26(1):38–57. [PubMed] [Google Scholar]
  4. Gerrard J. M., White J. G., Rao G. H., Townsend D. Localization of platelet prostaglandin production in the platelet dense tubular system. Am J Pathol. 1976 May;83(2):283–298. [PMC free article] [PubMed] [Google Scholar]
  5. Hamberg M., Hedqvist P., Strandberg K., Svensson J., Samuelsson B. Prostaglandin endoperoxides IV. Effects on smooth muscle. Life Sci. 1975 Feb 1;16(3):451–462. doi: 10.1016/0024-3205(75)90266-0. [DOI] [PubMed] [Google Scholar]
  6. Hamberg M., Samuelsson B. Prostaglandin endoperoxides. Novel transformations of arachidonic acid in human platelets. Proc Natl Acad Sci U S A. 1974 Sep;71(9):3400–3404. doi: 10.1073/pnas.71.9.3400. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Hamberg M., Svensson J., Samuelsson B. Thromboxanes: a new group of biologically active compounds derived from prostaglandin endoperoxides. Proc Natl Acad Sci U S A. 1975 Aug;72(8):2994–2998. doi: 10.1073/pnas.72.8.2994. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Hamberg M., Svensson J., Wakabayashi T., Samuelsson B. Isolation and structure of two prostaglandin endoperoxides that cause platelet aggregation. Proc Natl Acad Sci U S A. 1974 Feb;71(2):345–349. doi: 10.1073/pnas.71.2.345. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Hemler M., Lands W. E. Purification of the cyclooxygenase that forms prostaglandins. Demonstration of two forms of iron in the holoenzyme. J Biol Chem. 1976 Sep 25;251(18):5575–5579. [PubMed] [Google Scholar]
  10. Ho P. P., Walters C. P., Hermann R. G. Synthesis of platelet-aggregating factor by human platelet microsomes. Biochem Biophys Res Commun. 1976 Mar 8;69(1):218–224. doi: 10.1016/s0006-291x(76)80295-1. [DOI] [PubMed] [Google Scholar]
  11. Ho P. P., Walters C. P., Sullivan H. R. Biosynthesis of thromboxane B2: assay, isolation, and properties of the enzyme system in human platelets. Prostaglandins. 1976 Dec;12(6):951–970. doi: 10.1016/0090-6980(76)90129-5. [DOI] [PubMed] [Google Scholar]
  12. Kulkarni P. S., Eakins K. E. N-0164 inhibits generation of thromboxane-A2-like activity from prostaglandin endoperoxides by human platelet microsomes. Prostaglandins. 1976 Sep;12(3):465–469. doi: 10.1016/0090-6980(76)90027-7. [DOI] [PubMed] [Google Scholar]
  13. Miyamoto T., Ogino N., Yamamoto S., Hayaishi O. Purification of prostaglandin endoperoxide synthetase from bovine vesicular gland microsomes. J Biol Chem. 1976 May 10;251(9):2629–2636. [PubMed] [Google Scholar]
  14. Moncada S., Needleman P., Bunting S., Vane J. R. Prostaglandin endoperoxide and thromboxane generating systems and their selective inhibition. Prostaglandins. 1976 Sep;12(3):323–335. doi: 10.1016/0090-6980(76)90014-9. [DOI] [PubMed] [Google Scholar]
  15. Needleman P., Minkes M., Raz A. Thromboxanes: selective biosynthesis and distinct biological properties. Science. 1976 Jul 9;193(4248):163–165. doi: 10.1126/science.945611. [DOI] [PubMed] [Google Scholar]
  16. Needleman P., Moncada S., Bunting S., Vane J. R., Hamberg M., Samuelsson B. Identification of an enzyme in platelet microsomes which generates thromboxane A2 from prostaglandin endoperoxides. Nature. 1976 Jun 17;261(5561):558–560. doi: 10.1038/261558a0. [DOI] [PubMed] [Google Scholar]
  17. Svensson J., Hamberg M., Samuelsson B. Prostaglandin endoperoxides IX. Characterization of rabbit aorta contracting substance (RCS) from guinea pig lung and human platelets. Acta Physiol Scand. 1975 Jun;94(2):222–228. doi: 10.1111/j.1748-1716.1975.tb05881.x. [DOI] [PubMed] [Google Scholar]
  18. Van der Ouderaa F. J., Buytenhek M., Nugteren D. H., Van Dorp D. A. Purification and characterisation of prostaglandin endoperoxide synthetase from sheep vesicular glands. Biochim Biophys Acta. 1977 May 25;487(2):315–331. doi: 10.1016/0005-2760(77)90008-x. [DOI] [PubMed] [Google Scholar]
  19. White H. L., Glassman A. T. Biochemical properties of the prostaglandin/thromboxane synthetase of human blood platelets and comparison with the synthetase of bovine seminal vesicles. Prostaglandins. 1976 Nov;12(5):811–828. doi: 10.1016/0090-6980(76)90055-1. [DOI] [PubMed] [Google Scholar]
  20. White J. G., Gerrard J. M. Ultrastructural features of abnormal blood platelets. A review. Am J Pathol. 1976 Jun;83(3):589–632. [PMC free article] [PubMed] [Google Scholar]

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