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EC 1.1.1.53 Details
EC number
1.1.1.53
Accepted name
3α(or 20β)-hydroxysteroid dehydrogenase
Reaction
androstan-3α,17β-diol + NAD+ = 17β-hydroxyandrostan-3-one + NADH + H+
Other name(s)
cortisone reductase, (R)-20-hydroxysteroid dehydrogenase, 20β-hydroxy steroid dehydrogenase, Δ4-3-ketosteroid hydrogenase, 20β-hydroxysteroid dehydrogenase, 3α,20β-hydroxysteroid:NAD+-oxidoreductase, NADH-20β-hydroxysteroid dehydrogenase, 20β-HSD
Systematic name
3α(or 20β)-hydroxysteroid:NAD+ oxidoreductase
CAS registry number
9028-42-6
Comment
The 3α-hydroxy group or 20β-hydroxy group of pregnane and androstane steroids can act as donor.
History
created 1961, modified 1986
EC Tree
1.1.1.68 created 1965, deleted 1978 [transferred to EC 1.1.99.15, deleted 1980]
1.1.1.70 created 1965, deleted 1978
1.1.1.74 created 1972, deleted 1976
1.1.1.89 created 1972, deleted 1976
1.1.1.109 created 1972, deleted 1976
1.1.1.139 created 1972, deleted 1978
1.1.1.155 created 1976, deleted 2004
1.1.1.171 created 1978, deleted 1984
1.1.1.180 created 1983, deleted 1984
1.1.1.182 created 1983, deleted 1990
1.1.1.204 created 1972 as EC 1.2.1.37, transferred 1984 to EC 1.1.1.204, modified 1989, deleted 2004
1.1.1.242 created 1992, deleted 2001
1.1.1.249 provisional version created 1999, deleted 1999 (reinstated 2001 as EC 2.5.1.46)
1.1.1.253 created 1999, deleted 2003