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. 1976 Feb 1;153(2):343–350. doi: 10.1042/bj1530343

Bile acids of snakes of the subfamily Viperinae and the biosynthesis of C-23-hydroxylated bile acids in liver homogenate fractions from the adder, Vipera berus (Linn.).

S Ikawa, A R Tammar
PMCID: PMC1172580  PMID: 6007

Abstract

1. Analysis of bile salts of four snakes of the subfamily Viperinae showed that their bile acids consisted mainly of C-23-hydroxylated bile acids. 2. Incubations of 14C-labelled sodium cholate (3 alpha, 7 alpha, 12 alpha-trihydroxy-5 beta-cholan-24-oate) and deoxycholate (3 alpha, 12 alpha-dihydroxy-5 beta-cholan-24-oate) with whole and fractionated adder liver homogenates were carried out in the presence of molecular oxygen and NADPH or an NADPH-generating system. The formation of C-23-hydroxylated bile acids, namely bitocholic acid (3 alpha, 12 alpha, 23xi-trihydroxy-5 beta-cholan-24-oic acid) and 3 alpha, 7 alpha, 12 alpha, 23 xi-tetrahydroxy-cholanic acid (3 alpha, 7 alpha, 12 alpha, 23 xi-tetrahydroxy-5 beta-cholan-24-oic acid), was observed mainly in the microsomal fraction and partly in the mitochondrial fraction. 3. Biosynthetic pathways of C-23-hydroxylated bile acids are discussed.

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Selected References

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