Catalytic mechanism and inhibition studies of purine nucleoside phosphorylase (PNP) in micrococcus luteus

  • 발행 : 1997.03.01

초록

Kinetic studies were done to elucidate the reaction mechanism of purine nucleoside phosphorylase (PNP) in Micrococcus Luteus. PNP catalyzes the reversible phosphorolysis of ribonucleosides to their respective base. The effect of alternative competing substrates suggested that a single enzyme was involved in binding to the active site for all purine nucleosides, inosine, deoxyiosine, guanosine, deoxyguanosine, adenosine and deoxyadenosine. Affinity studies showed that pentose moiety reduced the binding capacity and methylation of ring N-1 of inosine and guanosine had little effect on binding to bacterial enzyme, whereas these compounds did not bind to the mammalian enzymes. The initial velocity and product inhibition studies demonstrated that the predominant mechanism of reaction was an ordered bi, bi reaction. The nucleoside bound to the enzyme first, followed by phosphate. Ribose 1-phosphate was the first product to leave, followed by base.

키워드

참고문헌

  1. J. Biol. Chem. v.263 Purine nucleoside phosphorylase Bzowska, A.;Kulikowska, E.;Darzynkiewicz, E.;Shugar, D.
  2. Kor. J. Microbiol. v.29 Partial purification and characterization of purine nuclesoside phosphorlase in Sacchromyces cerevisiae Choi, H.S.
  3. Kor. J. Microbiol. v.31 Kinetic analysis of purine nucleoside phosphrylase in Saccharomyces cerevisiae Choi, H.S.
  4. Kor. J. Microbiol. v.34 Purification and characterization of purine nucleoside phosphorylase in Micrococcus luteus Choi, H.S.
  5. J. Biol. Chem. v.256 Crystallization and preliminary X-ray invetigation of human erythroeytic purine nucleoside phosphorylase Cook, W.J.;Ealick, S.E.;Bugg, C.E.;Stoeckler, J.D.;Parks, R.E., Jr
  6. J. Pharmacol. Exp. Ther. v.260 The biochemistry and pharmacology of PD 116124 (8-amino-2'-nordeoxyguanosine), an inhibitor of purine nucleoside phosphorylase (PNP) Dong, M.K.;Scott, M.E.;Schrier, D.J.;Suto, M.J.;Sircar, J.C.;Black, A.;Chang, T.;Gilbertsen, R.B.
  7. J. Biol. Chem. v.265 Three-dimensional structure of human erythroeytic purine nucleoside phosphorylase at 3.2 A resolution Ealick, S. E.;Rule, S.A.;Carter, D.C.;Greenhough, T.J.;Babu, Y.S.;Cook, W.J.;Habash, J.;Helliwell, J.R.;Stoeckler, J.D.;Parks, R.E., Jr.;Chen, S.F.;Bugg, C.E.
  8. Proc. Natl. Acad. Sci. USA v.88 Application of crystallographic and modeling methods in the design of purine nucleoside phosphorylase inhibitors Ealick, S.E.;Babu, Y.S.;Bugg, C.E.;Erion, M.D.;Guida, W.C.;Montgomery, J.A.;Secrist Ⅲ, J.A.
  9. Biochem. Biophys. Res. Commun. v.178 Selective in vitro inhibition of human molt-4 lymphoblasts by the novel purine nucleoside phosphorylase inhibitor, CI-972 Gilbertsen, R.B.;Dong, K.K.;Kossarek, L.M.;Sircar, J.C.;Kostlan, C.R.;Conroy, M.C.
  10. Methods in Enzymology v.51 Purine nucleoside phosphorylase from Salmonella typhymurium and rat liver Hoffee, P.A.;May, R.;Robertson, B.C.;P.A. Hoffee(ed);M.E. Jones(ed)
  11. Comp. Biochem. Physiol. v.60B Purine nucleoside phosphorylase from bovine liver Ikezawa, Z.;Nishino, T.;Murakami, K.;Tsushima, K.
  12. Biochim. Biophys. Acta v.525 Two purine nucleoside phosphorylases in Bacillus subtilis Jensen, K.F.
  13. Eur. J. Biochem. v.61 Purine nucleoside phosphorylase from Escherichia coli and Salmonella typhymurium Jensen, K.F.
  14. J. Biol. Chem. v.167 Differential spectrophotometry of purine compounds by means of specific enzymes Kalckar, H.M.
  15. J. Biol. Chem. v.265 Nucleoside analogue inhibitors of purine nucleoside phosphorylase Krenitsky, T.A.;Tuttle, J.V.;Miller, W.H.;Moorman, A.R.;Orr, G.F.;Beauchamp, L.
  16. Arch. Biochem. Biophys. v.190 Rabbit brain purine nucleoside phosphorylase Lewis, A.S.
  17. Appl. Environment. Microbiol. v.56 Purification and characterization of a novel nucleoside phosphorylase from a Klebsiella sp. and its use in the enzymatic production of adenine arabinoside Ling, F.;Inou, Y.;kimura, A.
  18. Agric. Biol. Chem. v.55 IOsolation of adenosine-assimilating bacterium from soil: inducible production of purine nucleoside phosphorylase Ling, F.;Inou, Y.;Kimura, A.
  19. Ann. Rev. Biochem. v.50 Biochemistry of diseases of immunodevelopment Martin, D.W., Jr.;Gelfand, E.W.
  20. Biochem. Biophys. Acta v.384 Crystallization and some properties of purine nucleoside phosphorylase from chicken liver Murakami, K.;Tsushima, K.
  21. Proc. Natl. Acad. Sci. USA v.83 Nucleoside kinases in T and B lymphoblasts distinguished by autoradiography Osborne, W.R,
  22. Cancer Res. v.48 Selective modulation of antibody response and natural killer cell activity by purine nucleoside analogeus Pribe, T.;Kandil, O.;Nakic, M.;Pan, B.F.;Nelson, J.A.
  23. Clin. Chem. v.35 Depressed activities of purine enzymes in lymphocytes of patients infected with human immunodeficiency virus Renout, J.A.;Wood, A.;Frazer, I.H.;Thong, Y.H.;Chalmer, A.H.
  24. Arch. Biochem. Biophys. v.288 Allosteric regulation of purine nucleoside phosphorylase Ropp, P.A.;Traut, T.W.
  25. Biochem. Pharmacol. v.36 Inhibition of human purine nucleoside phosphorylase by acyclic nucleosides and nucleotides Stein, J.M.;Stoeckler, J.D.;Li, S-Y.;Tolman, R.L.;MacCoss, M.;Chen, A.;Karkas, J.D.;Ashton, W.T.;Parks, R.E., Jr.
  26. Developments in Cancer Chemotherapy Purine nucleoside phosphorylase Stoeckler, J.D.;R.I. Glazer(ed)
  27. Cancer Res. v.469 Inhibitors of purine nucleoside phosphorylase: effects of 9-deazapurine ribonucleosides and synthesis of 5'-deoxy-5'-iodo-9-deazainosine Stoeckler, J.D.;Ryden, J.B.;Parks, R. E., Jr.;Chu, M.Y.;Lim, M.L.;Ren, W.Y.;Klein, R.S.
  28. Appl. Environment. Microbiol. v.56 Purification and characterization of purine nucleoside phosphorylase from proteus vulgaris Surette, M.;Gill, T.;MacLean, S.
  29. J. Biol. Chem. v.259 Effects of acyalovir and its metabolites on purine nucleoside phosphorylase Tuttle, J.V.;Krenitsky, T.A.