Functional and immunological relationships between metyrapone reductase from mouse liver microsomes and 3α‐hydroxysteroid dehydrogenase from Pseudomonas testosteroni

FEBS Letters

Maser, Edmund¹  Netter, Karl J.¹  Oppermann, Udo C.T.¹  Bannenberg, Gudula¹ 

[1] Department of Pharmacology and Toxicology, School of Medicine, University of Marburg, Lahnberge, D-3550 Marburg/Lahn, Germany

关键词: Carbonyl reduction;    Steroid metabolism;    Aldehyde reductase;    3α-Hydroxysteroid dehydrogenase;    Pseudomonas testosteroni;    Metyrapone;    3α-HSD;    3α-hydroxysteroid dehydrogenase;    HPLC;    high-performance liquid chromatography;    SDS;    sodium dodecyl sulfate;    androsterone;    5α-androstan-3α-ol-17-one;    androstandione;    5α-androstan-3;    17-dione;    5α-DHT;    5α-dihydrotestosterone;    5β-DHT;    5β-dihydrotestosterone;    MPON;    metyrapone;    MPOL;    reduced metyrapone (metyrapol);   

DOI  :  10.1016/0014-5793(92)80359-O

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

3α-Hydroxysteroid dehydrogenase (3α-HSD) from Pseudomonas testosteroni was shown to reduce the xenobiotic carbonyl compound metyrapone (MPON). Reversely, MPON reductase purified from mouse liver microsomes and previously characterized as aldehyde reductase, was competitively inhibited by 3α-HSD steroid substrates. For MPON reduction both enzymes can use either NADH or NADPH as co-substrate. Immunoblot analysis after native and SDS gel electrophoresis of 3α-HSD gave a specific crossreaction with the antibodies against the microsomal mouse liver MPON reductase pointing to structural homologies between these enzymes. In conclusion, there seem to exist structural as well as functional relationships between a mammalian liver aldehyde reductase and prokaryotic 3α-HSD. Moreover, based on the molecular weights and the co-substrate specificities microsomal mouse liver MPON reductase and Pseudomonas 3α-HSD seem to be members of the short-chain alcohol dehydrogenase family.

【 授权许可】

Unknown