Entry
Name
20alpha-hydroxysteroid dehydrogenase;
20alpha-hydroxy steroid dehydrogenase;
20alpha-HSD;
20alpha-HSDH
Class
Oxidoreductases;
Acting on the CH-OH group of donors;
With NAD+ or NADP+ as acceptor
BRITE hierarchy
Sysname
20alpha-hydroxysteroid:NAD(P)+ 20-oxidoreductase
Reaction(IUBMB)
17alpha,20alpha-dihydroxypregn-4-en-3-one + NAD(P)+ = 17alpha-hydroxyprogesterone + NAD(P)H + H+ [RN:
R03325 ]
Reaction(KEGG)
Substrate
17alpha,20alpha-dihydroxypregn-4-en-3-one [CPD:
C04518 ];
NAD+ [CPD:
C00003 ];
NADP+ [CPD:
C00006 ]
Product
Comment
Re-specific with respect to NAD(P)+ (cf. EC
1.1.1.62 17beta-estradiol 17-dehydrogenase).
History
EC 1.1.1.149 created 1972, deleted 1983, reinstated 1986
Pathway
ec00140 Steroid hormone biosynthesis
Orthology
K00212 20alpha/3alpha-hydroxysteroid dehydrogenase / dihydrodiol dehydrogenase
K05295 20alpha-hydroxysteroid dehydrogenase
Genes
PON : 100171658(AKR1C1) 100189776
PPYG : 129006867 129006872
MCC : 711198(AKR1C1) 711360(AKR1C2)
MCF : 101865536(AKR1C1) 102141103
MTHB : 126963006 126963009
CSAB : 103237807 103237808
CATY : 105587685 105587688
MLEU : 105532487 105532488 105532490
TFN : 117083548 117083560 117087703 117087714
CANG : 105521701 105521702
MMU : 105349(Akr1c18) 77337(Akr1c21)
MPAH : 110315750 110333790
RNO : 171516(Akr1c3) 291283(Akr1c2) 307092(Akr1c1)
MUN : 110539888 110540933 110542801 132649305
CGE : 100768666 100770100 100770388
MAUA : 101839651 101841800 101843587
PROB : 127229804 127229811
PLEU : 114707814 114708002 114708030
AAMP : 119816162 119817583
CPOC : 100722094 100724342 100724620
MMMA : 107134068 107150203
OCU : 100348607(PGER1) 100352716
OPI : 101525116 101525279 101526245 118759111
» show all
Taxonomy
Reference
Authors
Shikita M, Inano H, Tamaoki B.
Title
Further studies on 20-alpha-hydroxysteroid dehydrogenase of rat testes.
Journal
Reference
Authors
Strickler RC, Tobias B, Covey DF
Title
Human placental 17 beta-estradiol dehydrogenase and 20 alpha-hydroxysteroid dehydrogenase. Two activities at a single enzyme active site.
Journal
J Biol Chem 256:316-21 (1981)
Other DBs
ExPASy - ENZYME nomenclature database: 1.1.1.149
LinkDB
All DBs