KEGG   ENZYME: 1.3.99.5Help
Entry
EC 1.3.99.5                 Enzyme                                 

Name
3-oxo-5alpha-steroid 4-dehydrogenase (acceptor);
steroid 5alpha-reductase;
3-oxosteroid Delta4-dehydrogenase;
3-oxo-5alpha-steroid Delta4-dehydrogenase;
steroid Delta4-5alpha-reductase;
Delta4-3-keto steroid 5alpha-reductase;
Delta4-3-oxo steroid reductase;
Delta4-3-ketosteroid5alpha-oxidoreductase;
Delta4-3-oxosteroid-5alpha-reductase;
3-keto-Delta4-steroid-5alpha-reductase;
5alpha-reductase;
testosterone 5alpha-reductase;
4-ene-3-ketosteroid-5alpha-oxidoreductase;
Delta4-5alpha-dehydrogenase;
3-oxo-5alpha-steroid:(acceptor) Delta4-oxidoreductase;
tesI (gene name)
Class
Oxidoreductases;
Acting on the CH-CH group of donors;
With other, unknown, acceptors
BRITE hierarchy
Sysname
3-oxo-5alpha-steroid:acceptor Delta4-oxidoreductase
Reaction(IUBMB)
a 3-oxo-5alpha-steroid + acceptor = a 3-oxo-Delta4-steroid + reduced acceptor [RN:R02643]
Reaction(KEGG)
Substrate
3-oxo-5alpha-steroid [CPD:C02940];
acceptor [CPD:C00028]
Product
3-oxo-Delta4-steroid [CPD:C00619];
reduced acceptor [CPD:C00030]
Comment
A flavoprotein. This bacterial enzyme, characterized from Comamonas testosteroni, is involved in androsterone degradation. cf. EC 1.3.1.22, 3-oxo-5alpha-steroid 4-dehydrogenase (NADP+).
History
EC 1.3.99.5 created 1965, modified 2012
Pathway
Steroid degradation
Microbial metabolism in diverse environments
Orthology
K16051  
3-oxo-5alpha-steroid 4-dehydrogenase
Genes
PPUT: 
PPUN: 
PPUU: 
PRE: 
PKC: 
GPB: 
REH: 
CNC: 
CTI: 
CTT: 
CTES: 
NAR: 
NPP: 
SWI: 
SPHM: 
MPA: 
MAO: 
MAV: 
MAVR: 
MAVD: 
MIT: 
MIR: 
MIA: 
MIE: 
MID: 
MYO: 
MSM: 
MSG: 
MSB: 
MSA: 
MSN: 
MSH: 
MUL: 
MVA: 
MGI: 
MSP: 
MAB: 
MABB: 
MMV: 
MAK: 
MAY: 
MAZ: 
MMC: 
MKM: 
MJL: 
MJD: 
MMI: 
MRH: 
MMM: 
MCB: 
MLI: 
MKN: 
NFA: 
NCY: 
NBR: 
NNO: 
RHA: 
RER: 
REY: 
ROP: 
ROA: 
REQ: 
RPY: 
TPR: 
SALU: 
TCU: 
FAL: 
AMD: 
AMN: 
AMM: 
AMZ: 
AOI: 
AJA: 
AMQ: 
KAL: 
STP: 
SAQ: 
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 » show all
Taxonomy
Reference
1  [PMID:13673006]
  Authors
LEVY HR, TALALAY P.
  Title
Bacterial oxidation of steroids. II. Studies on the enzymatic mechanism of ring A dehydrogenation.
  Journal
J. Biol. Chem. 234 (1959) 2014-21.
  Sequence
[up:Q59327]
Reference
2  [PMID:8655514]
  Authors
Florin C, Kohler T, Grandguillot M, Plesiat P
  Title
Comamonas testosteroni 3-ketosteroid-delta 4(5 alpha)-dehydrogenase: gene and protein characterization.
  Journal
J. Bacteriol. 178 (1996) 3322-30.
  Sequence
[up:Q59327]
Reference
3  [PMID:12902225]
  Authors
Horinouchi M, Hayashi T, Yamamoto T, Kudo T
  Title
A new bacterial steroid degradation gene cluster in Comamonas testosteroni TA441  which consists of aromatic-compound degradation genes for seco-steroids and 3-ketosteroid dehydrogenase genes.
  Journal
Appl. Environ. Microbiol. 69 (2003) 4421-30.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
9036-43-5

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