The Enzyme Database

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EC 1.1.1.395     
Accepted name: 3α-hydroxy bile acid-CoA-ester 3-dehydrogenase
Reaction: a 3α-hydroxy bile acid CoA ester + NAD+ = a 3-oxo bile acid CoA ester + NADH + H+
Other name(s): baiA1 (gene name); baiA2 (gene name); baiA3 (gene name)
Systematic name: 3α-hydroxy-bile-acid-CoA-ester:NAD+ 3-oxidoreductase
Comments: This bacterial enzyme is involved in the 7-dehydroxylation process associated with bile acid degradation. The enzyme has very little activity with unconjugated bile acid substrates. It has similar activity with choloyl-CoA, chenodeoxycholoyl-CoA, deoxycholoyl-CoA, and lithocholoyl-CoA.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Mallonee, D.H., Lijewski, M.A. and Hylemon, P.B. Expression in Escherichia coli and characterization of a bile acid-inducible 3α-hydroxysteroid dehydrogenase from Eubacterium sp. strain VPI 12708. Curr. Microbiol. 30 (1995) 259–263. [PMID: 7766153]
2.  Bhowmik, S., Jones, D.H., Chiu, H.P., Park, I.H., Chiu, H.J., Axelrod, H.L., Farr, C.L., Tien, H.J., Agarwalla, S. and Lesley, S.A. Structural and functional characterization of BaiA, an enzyme involved in secondary bile acid synthesis in human gut microbe. Proteins 82 (2014) 216–229. [PMID: 23836456]
[EC 1.1.1.395 created 2016]
 
 


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