KEGG   ENZYME: 5.3.3.1Help
Entry
EC 5.3.3.1                  Enzyme                                 

Name
steroid Delta-isomerase;
hydroxysteroid isomerase;
steroid isomerase;
Delta5-ketosteroid isomerase;
Delta5(or Delta4)-3-keto steroid isomerase;
Delta5-steroid isomerase;
3-oxosteroid isomerase;
Delta5-3-keto steroid isomerase;
Delta5-3-oxosteroid isomerase
Class
Isomerases;
Intramolecular oxidoreductases;
Transposing C=C bonds
BRITE hierarchy
Sysname
3-oxosteroid Delta5-Delta4-isomerase
Reaction(IUBMB)
a 3-oxo-Delta5-steroid = a 3-oxo-Delta4-steroid [RN:R02644]
Reaction(KEGG)
Substrate
3-oxo-Delta5-steroid [CPD:C01034]
Product
3-oxo-Delta4-steroid [CPD:C00619]
Comment
This activity is catalysed by several distinct enzymes (cf. EC 1.1.3.6, cholesterol oxidase and EC 1.1.1.145, 3-hydroxy-5-steroid dehydrogenase).
History
EC 5.3.3.1 created 1961
Pathway
ec00140  Steroid hormone biosynthesis
ec00984  Steroid degradation
ec01100  Metabolic pathways
ec01120  Microbial metabolism in diverse environments
Orthology
K00070  3beta-hydroxy-Delta5-steroid dehydrogenase / steroid Delta-isomerase
K01822  steroid Delta-isomerase
K16045  3beta-hydroxy-Delta5-steroid dehydrogenase / steroid Delta-isomerase
Genes
HSA: 3283(HSD3B1) 3284(HSD3B2)
PTR: 457165 469446
PPS: 100982464(HSD3B2) 100983009 100990187
GGO: 101141801 101146563(HSD3B2)
PON: 100451655 100452394
NLE: 100596087 100605995(HSD3B2) 100606563(HSD3B1) 100607955
MCC: 712686(HSD3B2) 713091(HSD3B1)
MCF: 102129497 102133592(HSD3B1) 102134747 102135110
CSAB: 103224100(HSD3B1) 103224104 103224107 103224109(HSD3B2)
RRO: 104654599 104654605
MMU: 100043456(Gm10681) 15492(Hsd3b1) 15493(Hsd3b2) 15495(Hsd3b4) 15496(Hsd3b5) 15497(Hsd3b6)
RNO: 108348086 24470(Hsd3b5) 29632(Hsd3b2) 360348(Hsd3b1) 682974(Hsd3b3)
HGL: 101707488(Hsd3b1) 101707858
CFA: 483146(HSD3B2)
AML: 100464280(HSD3B1)
UMR: 103677123
ORO: 101378904
FCA: 100616070(HSD3B2)
PTG: 102957262
AJU: 106978496
BTA: 281824(HSD3B1)
BOM: 102274088
BIU: 109555859
PHD: 102328070
CHX: 100860869(3BHSD)
OAS: 100190978(HSD3B1)
SSC: 445539(HSD3B1)
CFR: 102512447
CDK: 105089475
BACU: 103015346
LVE: 103083046
OOR: 101284283
ECB: 100034078(HSD3B2)
EPZ: 103548379
EAI: 106832920(HSD3B2)
MYB: 106723550(HSD3B2)
HAI: 109389868(HSD3B2)
RSS: 109446820(HAO2)
PALE: 102891879
LAV: 100659049(HSD3B2)
TMU: 101358325
MDO: 100012668
SHR: 100913530(HSD3B2)
OAA: 100080135
GGA: 396015(HSD3B1)
MGP: 104915630
CJO: 107319373(3beta-HSD)
ACYG: 106045741
TGU: 751770(HSD3B1)
GFR: 102039409
FAB: 101817697
PHI: 102101526
PMAJ: 107211459
CCW: 104687106
FPG: 101921564
FCH: 102052697
CLV: 102087460
EGZ: 104126518
AAM: 106497227
ASN: 102367786(HSD3B1)
AMJ: 109280168(HSD3B1)
PSS: 102453952
CMY: 102934871
CPIC: 101946936
ACS: 100561899(hsd3b1)
PVT: 110076926
PBI: 103067418
GJA: 107114856
XLA: 734818(hsd3b1.L)
XTR: 100490622
NPR: 108802532
DRE: 373131(hsd3b2) 553532(hsd3b1)
SRX: 107712267
SANH: 107658243
SGH: 107569293
CCAR: 109052439
IPU: 100304475(HSD3B)
AMEX: 103027852(hsd3b1)
TRU: 101069884(hsd3b1)
LCO: 104921488(hsd3b1)
MZE: 101485719
OLA: 100144358(3bhsd)
XMA: 102228303
PRET: 103477979
NFU: 107389612(hsd3b1)
CSEM: 103391994(hsd3b1)
LCF: 108902437
HCQ: 109522071
BPEC: 110156192(hsd3b1)
SASA: 106586600
ELS: 105016430
SFM: 108937872
LCM: 102345588
CMK: 103180179
DSI: Dsimw501_GD14693(Dsim_GD14693)
MDE: 101899660
AAG: 5566270
NVI: 100120136
ZNE: 110831195
FCD: 110862702
TUT: 107363285
TSP: Tsp_09898
OBI: 106875030
PRE: PCA10_13780(ksi)
PKC: PKB_4244
PSET: THL1_1429
SPL: Spea_2174
SHL: Shal_2145
GPB: HDN1F_02730(ksi)
REH: H16_B0602(h16_B0602)
BFN: OI25_4583
AJS: Ajs_2963
CTES: O987_07595
AZO: azo3316
XAU: Xaut_1492
HNE: HNE_1461
SWI: Swit_3295
SSAN: NX02_14810
SPHD: HY78_09075
SFLA: SPHFLASMR4Y_01939(ksi)
OIH: OB0288
MLE: ML1942
MLB: MLBr01942
MAB: MAB_1206
MABB: MASS_1204
MABO: NF82_06100
MCHE: BB28_05990
MSTE: MSTE_01173
ASD: AS9A_0954
NFR: ERS450000_01854(ksi_1) ERS450000_02770(ksi_2)
RER: RER_13740(ksi) RER_59940
ROP: ROP_34080(ksi)
GBR: Gbro_4817
GOR: KTR9_4702
SGR: SGR_6072
SALS: SLNWT_0271
NCA: Noca_3954
NDK: I601_0503(ksi)
FAL: FRAAL4373
SEN: SACE_4441
SAQ: Sare_2441
 » show all
Taxonomy
Reference
1  [PMID:5867327]
  Authors
Ewald W, Werbin H, Chaikoff IL.
  Title
Evidence for the presence of 17-hydroxypregnenedione isomerase in beef adrenal cortex.
  Journal
Biochim. Biophys. Acta. 111 (1965) 306-12.
Reference
2  [PMID:14404954]
  Authors
KAWAHARA FS, TALALAY P.
  Title
Crystalline Delta 5-3-ketosteroid isomerase.
  Journal
J. Biol. Chem. 235 (1960) PC1-2.
Reference
3  [PMID:13276386]
  Authors
TALALAY P, WANG VS.
  Title
Enzymic isomerization of delta5-3-ketosteroids.
  Journal
Biochim. Biophys. Acta. 18 (1955) 300-1.
Reference
4  [PMID:10822008]
  Authors
MacLachlan J, Wotherspoon AT, Ansell RO, Brooks CJ
  Title
Cholesterol oxidase: sources, physical properties and analytical applications.
  Journal
J. Steroid. Biochem. Mol. Biol. 72 (2000) 169-95.
Other DBs
ExplorEnz - The Enzyme Database: 5.3.3.1
IUBMB Enzyme Nomenclature: 5.3.3.1
ExPASy - ENZYME nomenclature database: 5.3.3.1
BRENDA, the Enzyme Database: 5.3.3.1
CAS: 9031-36-1
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