Catalyzes the reversible interconversion of hydroxy and oxo groups at position 3 of the steroid nucleus. Along with the 3 alpha-hydroxysteroid dehydrogenase and 3-oxo-reductase activities towards a variety of cis or trans fused A/B ring steroids, it also reduces several xenobiotic carbonyl compounds, including a metyrapone-based class of insecticides, to the respective alcohol metabolites. No detectable activity on testosterone, progesterone or 3-oxo-desogestrel.

Belongs to the short-chain dehydrogenases/reductases (SDR) family.

257 amino acids

MSIIVISGCATGIGAATRKVLEAAGHQIVGIDIRDAEVIADLSTAEGRKQAIADVLAKCSKGMDGLVLCAGLGPQTKVLGNVVSVNYFGATELMDAFLPALKKGHQPAAVVISSVASAHLAFDKNPLALALEAGEEAKARAIVEHAGEQGGNLAYAGSKNALTVAVRKRAAAWGEAGVRLNTIAPGATETPLLQAGLQDPRYGESIAKFVPPMGRRAEPSEMASVIAFLMSPAASYVHGAQIVIDGGIDAVMRPTQF

26.4 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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