Abstract
Rat Y' bile acid binders (33 kD) have been previously recognized as cytosolic bile acid binding proteins (Sugiyama, Y., T. Yamada, and N. Kaplowitz, 1983, J. Biol. Chem., 258:3602-3607). We have now determined that these Y' binders are 3 alpha-hydroxysteroid dehydrogenases (3 alpha-HSD), bile acid-metabolizing enzymes. 3 alpha-HSD activity copurified with lithocholic acid-binding activity after sequential gel filtration, chromatofocusing, and affinity chromatography. Three peaks of 3 alpha-HSD activity (I, II, III) were observed in chromatofocusing and all were identified on Western blot by a specific Y' binder antiserum. 3 alpha-HSD-I, the predominant form, was purified and functioned best as a reductase at pH 7.0 with a marked preference for NADPH. Michaelis constant values for mono- and dihydroxy bile acids were 1-2 microM, and cholic acid competitively inhibited the reduction of 3-oxo-cholic acid. Under normal redox conditions, partially purified 3 alpha-HSD-I and freshly isolated hepatocytes catalyzed the rapid reduction of 3-oxo-cholic to cholic acid without formation of isocholic acid, whereas the reverse reaction was negligible. The Y' bile acid binders are therefore 3 alpha-HSD, which preferentially and stereospecifically catalyze the reduction of 3-oxo-bile acids to 3 alpha-hydroxy bile acids.
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- Aw T. Y., Ookhtens M., Ren C., Kaplowitz N. Kinetics of glutathione efflux from isolated rat hepatocytes. Am J Physiol. 1986 Feb;250(2 Pt 1):G236–G243. doi: 10.1152/ajpgi.1986.250.2.G236. [DOI] [PubMed] [Google Scholar]
- Batta A. K., Salen G., Shefer S. Transformation of bile acids into iso-bile acids by Clostridium perfringens: possible transport of 3 beta-hydrogen via the coenzyme. Hepatology. 1985 Nov-Dec;5(6):1126–1131. doi: 10.1002/hep.1840050611. [DOI] [PubMed] [Google Scholar]
- Berséus O. Conversion of cholesterol to bile acids in rat: purification and properties of a delta-4-3-ketosteroid 5-beta-reductase and a 3-alpha-hydroxysteroid dehydrogenase. Eur J Biochem. 1967 Nov;2(4):493–502. doi: 10.1111/j.1432-1033.1967.tb00163.x. [DOI] [PubMed] [Google Scholar]
- Björkhem I., Angelin B., Einarsson K., Ewerth S. Fasting levels of monoketonic bile acids in human peripheral and portal circulation. J Lipid Res. 1982 Sep;23(7):1020–1025. [PubMed] [Google Scholar]
- Björkhem I., Danielsson H., Wikvall K. Reduction of C19-, C21-, C24-, and C27-3-oxosteroids by rat-liver microsomes. Eur J Biochem. 1973 Jul 2;36(1):8–15. doi: 10.1111/j.1432-1033.1973.tb02878.x. [DOI] [PubMed] [Google Scholar]
- Blitzer B. L., Donovan C. B. A new method for the rapid isolation of basolateral plasma membrane vesicles from rat liver. Characterization, validation, and bile acid transport studies. J Biol Chem. 1984 Jul 25;259(14):9295–9301. [PubMed] [Google Scholar]
- ENEROTH P. THIN-LAYER CHROMATOGRAPHY OF BILE ACIDS. J Lipid Res. 1963 Jan;4:11–16. [PubMed] [Google Scholar]
- Glatt H. R., Cooper C. S., Grover P. L., Sims P., Bentley P., Merdes M., Waechter F., Vogel K., Guenthner T. M., Oesch F. Inactivation of a diol epoxide by dihydrodiol dehydrogenase but not by two epoxide hydrolases. Science. 1982 Mar 19;215(4539):1507–1509. doi: 10.1126/science.7038877. [DOI] [PubMed] [Google Scholar]
- Glatt H. R., Vogel K., Bentley P., Oesch F. Reduction of benzo(a)pyrene mutagenicity by dihydrodiol dehydrogenase. Nature. 1979 Jan 25;277(5694):319–320. doi: 10.1038/277319a0. [DOI] [PubMed] [Google Scholar]
- Ikawa S. 3-beta-hydroxy-C24-steroid dehydrogenase in rat liver microsomes. Yonago Acta Med. 1968 Dec;12(3):155–162. [PubMed] [Google Scholar]
- Ikeda M., Hattori H., Ikeda N., Hayakawa S., Ohmori S. Purification and characterization of the multiple forms of 3 alpha-hydroxysteroid dehydrogenase in rat liver cytosol. Hoppe Seylers Z Physiol Chem. 1984 Mar;365(3):377–391. doi: 10.1515/bchm2.1984.365.1.377. [DOI] [PubMed] [Google Scholar]
- Ikeda M., Hayakawa S., Ezaki M., Ohmori S. An NADP-dependent 3 alpha-hydroxysteroid dehydrogenase of rat liver active against C19, C20, C23, C24, C25 and C26 steroids. Hoppe Seylers Z Physiol Chem. 1981 May;362(5):511–520. doi: 10.1515/bchm2.1981.362.1.511. [DOI] [PubMed] [Google Scholar]
- Inoue M., Kinne R., Tran T., Arias I. M. Taurocholate transport by rat liver sinusoidal membrane vesicles: evidence of sodium cotransport. Hepatology. 1982 Sep-Oct;2(5):572–579. doi: 10.1002/hep.1840020510. [DOI] [PubMed] [Google Scholar]
- Jones D. P. Determination of pyridine dinucleotides in cell extracts by high-performance liquid chromatography. J Chromatogr. 1981 Oct 9;225(2):446–449. doi: 10.1016/s0378-4347(00)80293-5. [DOI] [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]
- Meier P. J., St Meier-Abt A., Barrett C., Boyer J. L. Mechanisms of taurocholate transport in canalicular and basolateral rat liver plasma membrane vesicles. Evidence for an electrogenic canalicular organic anion carrier. J Biol Chem. 1984 Aug 25;259(16):10614–10622. [PubMed] [Google Scholar]
- Moldéus P., Högberg J., Orrenius S. Isolation and use of liver cells. Methods Enzymol. 1978;52:60–71. doi: 10.1016/s0076-6879(78)52006-5. [DOI] [PubMed] [Google Scholar]
- Penning T. M., Mukharji I., Barrows S., Talalay P. Purification and properties of a 3 alpha-hydroxysteroid dehydrogenase of rat liver cytosol and its inhibition by anti-inflammatory drugs. Biochem J. 1984 Sep 15;222(3):601–611. doi: 10.1042/bj2220601. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Shefer S., Salen G., Hauser S., Dayal B., Batta A. K. Metabolism of iso-bile acids in the rat. J Biol Chem. 1982 Feb 10;257(3):1401–1406. [PubMed] [Google Scholar]
- Stolz A., Sugiyama Y., Kuhlenkamp J., Osadchey B., Yamada T., Belknap W., Balistreri W., Kaplowitz N. Cytosolic bile acid binding protein in rat liver: radioimmunoassay, molecular forms, developmental characteristics and organ distribution. Hepatology. 1986 May-Jun;6(3):433–439. doi: 10.1002/hep.1840060319. [DOI] [PubMed] [Google Scholar]
- Strange R. C. Hepatic bile flow. Physiol Rev. 1984 Oct;64(4):1055–1102. doi: 10.1152/physrev.1984.64.4.1055. [DOI] [PubMed] [Google Scholar]
- Sugiyama Y., Stolz A., Sugimoto M., Kaplowitz N. Evidence for a common high affinity binding site on glutathione S-transferase B for lithocholic acid and bilirubin. J Lipid Res. 1984 Nov;25(11):1177–1183. [PubMed] [Google Scholar]
- Sugiyama Y., Yamada T., Kaplowitz N. Newly identified bile acid binders in rat liver cytosol. Purification and comparison with glutathione S-transferases. J Biol Chem. 1983 Mar 25;258(6):3602–3607. [PubMed] [Google Scholar]
- TOMKINS G. M. A mammalian 3alpha-hydroxysteroid dehydrogenase. J Biol Chem. 1956 Jan;218(1):437–447. [PubMed] [Google Scholar]
- Takikawa H., Otsuka H., Beppu T., Seyama Y., Yamakawa T. Quantitative determination of bile acid glucuronides in serum by mass fragmentography. J Biochem. 1982 Oct;92(4):985–998. doi: 10.1093/oxfordjournals.jbchem.a134055. [DOI] [PubMed] [Google Scholar]
- Towbin H., Staehelin T., Gordon J. Electrophoretic transfer of proteins from polyacrylamide gels to nitrocellulose sheets: procedure and some applications. Proc Natl Acad Sci U S A. 1979 Sep;76(9):4350–4354. doi: 10.1073/pnas.76.9.4350. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Usui T., Kawamoto H., Sakamoto A., Katayama K. Studies on a 3alpha-hydroxysteroid dehydrogenase in rat liver. Yonago Acta Med. 1968 Aug;12(2):111–117. [PubMed] [Google Scholar]
- Vessey D. A., Zakim D. Inhibition of glutathione S-transferase by bile acids. Biochem J. 1981 Aug 1;197(2):321–325. doi: 10.1042/bj1970321. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Vogel K., Bentley P., Platt K. L., Oesch F. Rat liver cytoplasmic dihydrodiol dehydrogenase. Purification to apparent homogeneity and properties. J Biol Chem. 1980 Oct 25;255(20):9621–9625. [PubMed] [Google Scholar]
- Wray W., Boulikas T., Wray V. P., Hancock R. Silver staining of proteins in polyacrylamide gels. Anal Biochem. 1981 Nov 15;118(1):197–203. doi: 10.1016/0003-2697(81)90179-2. [DOI] [PubMed] [Google Scholar]
- Wörner W., Oesch F. Identity of dihydrodiol dehydrogenase and 3 alpha-hydroxysteroid dehydrogenase in rat but not in rabbit liver cytosol. FEBS Lett. 1984 May 21;170(2):263–267. doi: 10.1016/0014-5793(84)81325-3. [DOI] [PubMed] [Google Scholar]