description
Bile acids are steroid carboxylic acids derived from cholesterol in vertebrates. The primary bile acids, cholic acid and chenodeoxycholic acid, are synthesized in the liver and conjugated with taurine or glycine before secretion via bile into the intestine. The conversion from cholesterol to cholic and chenodeoxycholic acids involves four steps: 1) the initiation of synthesis by 7alpha-hydroxylation of sterol precursors, 2) further modifications to the ring structures, 3) side-chain oxidation and shortening (cleavage) by three carbons, and 4) conjugation of the bile acid with taurine or glycine

external resources
NCBI:82938
KEGG:hsa00120
PUBMED:16299351
PUBMED:11067870
PUBMED:9292932
PUBMED:10198776
PUBMED:18488143
PUBMED:12543708
PUBMED:18081658
PUBMED:17346171

genes
BAAT , AKR1C4 , CYP7A1 , CYP8B1 , CYP27A1 , HSD17B4 , SCP2 , AKR1D1 , ACOX2 , CH25H , CYP7B1 , ACOT8 , CYP46A1 , SLC27A5 , AMACR , CYP39A1 , HSD3B7 ,