Degradation of steroids by intestinal bacteria. II. Enzymes catalysing the oxidoreduction of the 3 alpha-, 7 alpha- and 12 alpha-hydroxyl groups in cholic acid, and the dehydroxylation of the 7-hydroxyl group.

Alcohol Oxidoreductases/antagonists & inhibitors,isolation & purification Bacteria/enzymology Bacteroides/enzymology Bile Acids and Salts/metabolism Cell-Free System Chromatography, DEAE-Cellulose Chromatography, Gel Chromatography, Thin Layer Clostridium perfringens/enzymology Culture Media Drug Stability Enterococcus faecalis/enzymology Escherichia coli/enzymology Feces/microbiology Hot Temperature Humans Hydrogen-Ion Concentration Intestines/enzymology,microbiology Kinetics Methods NAD NADP Species Specificity

Bile Acids and Salts Culture Media NAD NADP Alcohol Oxidoreductases