Abstract
An NADP(+)-dependent D-xylose dehydrogenase from pig liver cytosol was purified about 2000-fold to apparent homogeneity with a yield of 15% and specific activity of 6 units/mg of protein. An Mr value of 62,000 was obtained by gel filtration. PAGE in the presence of SDS gave an Mr value of 32,000, suggesting that the native enzyme is a dimer of similar or identical subunits. D-Xylose, D-ribose, L-arabinose, 2-deoxy-D-glucose, D-glucose and D-mannose were substrates in the presence of NADP+ but the specificity constant (ratio kcat./Km(app.)) is, by far, much higher for D-xylose than for the other sugars. The enzyme is specific for NADP+; NAD+ is not reduced in the presence of D-xylose or other sugars. Initial-velocity studies for the forward direction with xylose or NADP+ concentrations varied at fixed concentrations of the nucleotide or the sugar respectively revealed a pattern of parallel lines in double-reciprocal plots. Km values for D-xylose and NADP+ were 8.8 mM and 0.99 mM respectively. Dead-end inhibition studies to confirm a ping-pong mechanism showed that NAD+ acted as an uncompetitive inhibitor versus NADP+ (Ki 5.8 mM) and as a competitive inhibitor versus xylose. D-Lyxose was a competitive inhibitor versus xylose and uncompetitive versus NADP+. These results fit better to a sequential compulsory ordered mechanism with NADP+ as the first substrate, but a ping-pong mechanism with xylose as the first substrate has not been ruled out. The presence of D-xylose dehydrogenase suggests that in mammalian liver D-xylose is utilized by a pathway other than the pentose phosphate pathway.
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- Aird B. A., Heinrikson R. L., Westley J. Isolation and characterization of a prokaryotic sulfurtransferase. J Biol Chem. 1987 Dec 25;262(36):17327–17335. [PubMed] [Google Scholar]
- Allen S. H., Patil J. R. Studies on the structure and mechanism of action of the malate-lactate transhydrogenase. J Biol Chem. 1972 Feb 10;247(3):909–916. [PubMed] [Google Scholar]
- Baumann P., Wright B. E. The phosphofructokinase of Dictyostelium discoideum. Biochemistry. 1968 Oct;7(10):3653–3661. doi: 10.1021/bi00850a044. [DOI] [PubMed] [Google Scholar]
- Bradford M. M. A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Anal Biochem. 1976 May 7;72:248–254. doi: 10.1006/abio.1976.9999. [DOI] [PubMed] [Google Scholar]
- CLELAND W. W. The kinetics of enzyme-catalyzed reactions with two or more substrates or products. I. Nomenclature and rate equations. Biochim Biophys Acta. 1963 Jan 8;67:104–137. doi: 10.1016/0006-3002(63)91800-6. [DOI] [PubMed] [Google Scholar]
- Carper W. R., Chang K. W., Thorpe W. G., Carper M. A., Buess C. M. Arabinose (fucose) dehydrogenase from pig liver. II. Steady-state kinetics. Biochim Biophys Acta. 1974 Jul 17;358(1):49–56. doi: 10.1016/0005-2744(74)90257-5. [DOI] [PubMed] [Google Scholar]
- Carper W. R., Toews M. L., Thompson R. E., Buess C. M. A kinetic study of pig liver glucose dehydrogenase. Arch Biochem Biophys. 1976 Jul;175(1):312–320. doi: 10.1016/0003-9861(76)90513-0. [DOI] [PubMed] [Google Scholar]
- Carrasco A., Pincheira G., Ureta T. Genetic and biochemical characterization of D-arabinose dehydrogenase from Neurospora crassa. J Bacteriol. 1981 Jan;145(1):164–170. doi: 10.1128/jb.145.1.164-170.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cline A. L., Hu A. S. Enzymatic characterization and comparison of three sugar dehydrogenases from a pseudomonad. J Biol Chem. 1965 Nov;240(11):4493–4497. [PubMed] [Google Scholar]
- Cline A. L., Hu A. S. Some physical properties of three sugar dehydrogenases from a pseudomonad. J Biol Chem. 1965 Nov;240(11):4498–4502. [PubMed] [Google Scholar]
- Cline A. L., Hu A. S. The isolation of three sugar dehydrogenases from a psuedomonad. J Biol Chem. 1965 Nov;240(11):4488–4492. [PubMed] [Google Scholar]
- Cornish-Bowden A., Endrenyi L. Robust regression of enzyme kinetic data. Biochem J. 1986 Feb 15;234(1):21–29. doi: 10.1042/bj2340021. [DOI] [PMC free article] [PubMed] [Google Scholar]
- DAVIS B. J. DISC ELECTROPHORESIS. II. METHOD AND APPLICATION TO HUMAN SERUM PROTEINS. Ann N Y Acad Sci. 1964 Dec 28;121:404–427. doi: 10.1111/j.1749-6632.1964.tb14213.x. [DOI] [PubMed] [Google Scholar]
- DOUDOROFF M., PALLERONI N. J. Characterization and properties of 2-keto-3-deoxy-D-arabonic acid. J Biol Chem. 1956 Nov;223(1):499–508. [PubMed] [Google Scholar]
- Eisenthal R., Cornish-Bowden A. The direct linear plot. A new graphical procedure for estimating enzyme kinetic parameters. Biochem J. 1974 Jun;139(3):715–720. doi: 10.1042/bj1390715. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Endo M., Hiyama N. Isolation and characterization of L-fucose dehydrogenase from rabbit liver. J Biochem. 1979 Nov;86(5):1559–1565. doi: 10.1093/oxfordjournals.jbchem.a132673. [DOI] [PubMed] [Google Scholar]
- Gershman H., Abeles R. H. Deuterium isotope effects in the oxidation of alcohols in vitro and in vivo. Arch Biochem Biophys. 1973 Feb;154(2):659–674. doi: 10.1016/0003-9861(73)90021-0. [DOI] [PubMed] [Google Scholar]
- Gold M. H., Segel I. H. Neurospora crassa protein kinase. Purification, properties, and kinetic mechanism. J Biol Chem. 1974 Apr 25;249(8):2417–2423. [PubMed] [Google Scholar]
- Laemmli U. K. Cleavage of structural proteins during the assembly of the head of bacteriophage T4. Nature. 1970 Aug 15;227(5259):680–685. doi: 10.1038/227680a0. [DOI] [PubMed] [Google Scholar]
- Maijub A. G., Pecht M. A., Miller G. R., Carper W. R. Arabinose (fucose) dehydrogenase from pig liver. I. Isolation and characterization. Biochim Biophys Acta. 1973 Jul 5;315(1):37–42. doi: 10.1016/0005-2744(73)90126-5. [DOI] [PubMed] [Google Scholar]
- Metzger R. P., Copp E. F., Metzger S. A., Wick A. N. Dehydrogenation of glucose and xylose catalyzed by rat and sheep liver microsomal and soluble fractions. Metabolism. 1970 Aug;19(8):587–597. doi: 10.1016/0026-0495(70)90015-6. [DOI] [PubMed] [Google Scholar]
- Metzger R. P., Wick A. N. Partial purification of rat liver D-arabinose dehydrogenase. Biochem Biophys Res Commun. 1967 Mar 21;26(6):742–747. doi: 10.1016/s0006-291x(67)80136-0. [DOI] [PubMed] [Google Scholar]
- Mobley P. W., Metzger R. P. The physical properties NAD-dependent L-fucose dehydrogenase from sheep liver. Arch Biochem Biophys. 1978 Feb;186(1):184–188. doi: 10.1016/0003-9861(78)90478-2. [DOI] [PubMed] [Google Scholar]
- Mobley P. W., Metzger R. P., Wick A. N. NAD-dependent L-fucose dehydrogenase from sheep liver. Arch Biochem Biophys. 1970 Jul;139(1):83–86. doi: 10.1016/0003-9861(70)90047-0. [DOI] [PubMed] [Google Scholar]
- Newton M. F., Nash H. R., Peters J., Andrews S. J. Xylose dehydrogenase-1, a new gene on mouse chromosome 7. Biochem Genet. 1982 Aug;20(7-8):733–745. doi: 10.1007/BF00483970. [DOI] [PubMed] [Google Scholar]
- Pincheira G., Leon G., Ureta T. Aldosugar dehydrogenases from Neurospora crassa Partial purification and characterization of D-arabinose: NAD dehydrogenase. FEBS Lett. 1973 Feb 15;30(1):111–114. doi: 10.1016/0014-5793(73)80630-1. [DOI] [PubMed] [Google Scholar]
- Purich D. L., Fromm H. J. The kinetics and regulation of rat brain hexokinase. J Biol Chem. 1971 Jun 10;246(11):3456–3463. [PubMed] [Google Scholar]
- Ropson I. J., Powers D. A. A novel dehydrogenase reaction mechanism for hexose-6-phosphate dehydrogenase isolated from the teleost Fundulus heteroclitus. J Biol Chem. 1988 Aug 25;263(24):11697–11703. [PubMed] [Google Scholar]
- SEGAL S., FOLEY J. B. The metabolic fate of C14 labeled pentoses in man. J Clin Invest. 1959 Feb;38(2):407–413. doi: 10.1172/JCI103815. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Schachter H., Sarney J., McGuire E. J., Roseman S. Isolation of diphosphopyridine nucleotide-dependent L-fucose dehydrogenase from pork liver. J Biol Chem. 1969 Sep 10;244(17):4785–4792. [PubMed] [Google Scholar]
- Schiwara H. W., Domschke W., Domagk G. F. Uber die Zucker-Dehydrogenasen in der Säugetierleber. I. Differenzierung verschiedener Zucker-Dehydrogenasen in der Schweineleber durch Disk-Electrophorese und Ionenaustausch-cnromatographie. Hoppe Seylers Z Physiol Chem. 1968 Nov;349(11):1575–1581. [PubMed] [Google Scholar]
- Ureta T., Radojković J. Chromatographic and electrophoretic evidence for several sugar dehydrogenases in mammalian liver. FEBS Lett. 1970 Jul 29;9(2):57–60. doi: 10.1016/0014-5793(70)80311-8. [DOI] [PubMed] [Google Scholar]
- VAN HEYNINGEN R. Metabolism of xylose by the lens; calf lens in vitro. Biochem J. 1958 Aug;69(4):481–491. doi: 10.1042/bj0690481a. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Yuen R., Schachter H. L-Fucose metabolism in mammals. I. Port liver L-fuconate hydro-lyase. Can J Biochem. 1972 Jul;50(7):798–806. doi: 10.1139/o72-111. [DOI] [PubMed] [Google Scholar]