ID A0A3Q1BRT4_AMPOC Unreviewed; 255 AA.
AC A0A3Q1BRT4;
DT 10-APR-2019, integrated into UniProtKB/TrEMBL.
DT 10-APR-2019, sequence version 1.
DT 27-MAR-2024, entry version 26.
DE RecName: Full=3-oxo-5-alpha-steroid 4-dehydrogenase {ECO:0000256|PIRNR:PIRNR015596};
DE EC=1.3.1.22 {ECO:0000256|PIRNR:PIRNR015596};
OS Amphiprion ocellaris (Clown anemonefish).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata;
OC Ovalentaria; Pomacentridae; Amphiprion.
OX NCBI_TaxID=80972 {ECO:0000313|Ensembl:ENSAOCP00000017085.1, ECO:0000313|Proteomes:UP000257160};
RN [1] {ECO:0000313|Ensembl:ENSAOCP00000017085.1}
RP IDENTIFICATION.
RG Ensembl;
RL Submitted (NOV-2023) to UniProtKB.
CC -!- FUNCTION: Converts testosterone into 5-alpha-dihydrotestosterone and
CC progesterone or corticosterone into their corresponding 5-alpha-3-
CC oxosteroids. It plays a central role in sexual differentiation and
CC androgen physiology. {ECO:0000256|PIRNR:PIRNR015596}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=17beta-hydroxy-5alpha-androstan-3-one + NADP(+) = H(+) + NADPH
CC + testosterone; Xref=Rhea:RHEA:50820, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:16330, ChEBI:CHEBI:17347, ChEBI:CHEBI:57783,
CC ChEBI:CHEBI:58349; EC=1.3.1.22;
CC Evidence={ECO:0000256|ARBA:ARBA00023677};
CC PhysiologicalDirection=right-to-left; Xref=Rhea:RHEA:50822;
CC Evidence={ECO:0000256|ARBA:ARBA00023677};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=5alpha-pregnane-3,20-dione + NADP(+) = H(+) + NADPH +
CC progesterone; Xref=Rhea:RHEA:21952, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:17026, ChEBI:CHEBI:28952, ChEBI:CHEBI:57783,
CC ChEBI:CHEBI:58349; EC=1.3.1.22;
CC Evidence={ECO:0000256|ARBA:ARBA00034445};
CC PhysiologicalDirection=right-to-left; Xref=Rhea:RHEA:21954;
CC Evidence={ECO:0000256|ARBA:ARBA00034445};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a 3-oxo-5alpha-steroid + NADP(+) = a 3-oxo-Delta(4)-steroid +
CC H(+) + NADPH; Xref=Rhea:RHEA:54384, ChEBI:CHEBI:13601,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:47909, ChEBI:CHEBI:57783,
CC ChEBI:CHEBI:58349; EC=1.3.1.22;
CC Evidence={ECO:0000256|ARBA:ARBA00001683,
CC ECO:0000256|PIRNR:PIRNR015596};
CC -!- SUBCELLULAR LOCATION: Membrane {ECO:0000256|ARBA:ARBA00004141}; Multi-
CC pass membrane protein {ECO:0000256|ARBA:ARBA00004141}. Microsome
CC membrane {ECO:0000256|ARBA:ARBA00004154}; Multi-pass membrane protein
CC {ECO:0000256|ARBA:ARBA00004154}.
CC -!- SIMILARITY: Belongs to the steroid 5-alpha reductase family.
CC {ECO:0000256|ARBA:ARBA00007742, ECO:0000256|PIRNR:PIRNR015596}.
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DR AlphaFoldDB; A0A3Q1BRT4; -.
DR STRING; 80972.ENSAOCP00000017085; -.
DR Ensembl; ENSAOCT00000026256.1; ENSAOCP00000017085.1; ENSAOCG00000022107.1.
DR GeneTree; ENSGT00950000182886; -.
DR OMA; HRDYQQR; -.
DR OrthoDB; 152402at2759; -.
DR Proteomes; UP000257160; Unplaced.
DR GO; GO:0016020; C:membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0003865; F:3-oxo-5-alpha-steroid 4-dehydrogenase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0047751; F:3-oxo-5alpha-steroid 4-dehydrogenase (NADP+); IEA:UniProtKB-EC.
DR GO; GO:0006702; P:androgen biosynthetic process; IEA:UniProt.
DR GO; GO:0007548; P:sex differentiation; IEA:UniProtKB-KW.
DR Gene3D; 1.20.120.1630; -; 1.
DR InterPro; IPR016636; 3-oxo-5-alpha-steroid_4-DH.
DR InterPro; IPR001104; 3-oxo-5_a-steroid_4-DH_C.
DR InterPro; IPR039357; SRD5A/TECR.
DR PANTHER; PTHR10556; 3-OXO-5-ALPHA-STEROID 4-DEHYDROGENASE; 1.
DR PANTHER; PTHR10556:SF43; 3-OXO-5-ALPHA-STEROID 4-DEHYDROGENASE 2; 1.
DR Pfam; PF02544; Steroid_dh; 1.
DR PIRSF; PIRSF015596; 5_alpha-SR2; 1.
DR PROSITE; PS50244; S5A_REDUCTASE; 1.
PE 3: Inferred from homology;
KW Differentiation {ECO:0000256|ARBA:ARBA00022928};
KW Endoplasmic reticulum {ECO:0000256|ARBA:ARBA00022848};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|PIRNR:PIRNR015596};
KW Microsome {ECO:0000256|ARBA:ARBA00022848};
KW Reference proteome {ECO:0000313|Proteomes:UP000257160};
KW Sexual differentiation {ECO:0000256|ARBA:ARBA00022928};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692,
KW ECO:0000256|PIRNR:PIRNR015596};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989,
KW ECO:0000256|PIRNR:PIRNR015596}.
FT TRANSMEM 6..24
FT /note="Helical"
FT /evidence="ECO:0000256|PIRNR:PIRNR015596"
FT TRANSMEM 82..102
FT /note="Helical"
FT /evidence="ECO:0000256|PIRNR:PIRNR015596"
FT TRANSMEM 108..126
FT /note="Helical"
FT /evidence="ECO:0000256|PIRNR:PIRNR015596"
FT TRANSMEM 147..164
FT /note="Helical"
FT /evidence="ECO:0000256|PIRNR:PIRNR015596"
FT TRANSMEM 199..225
FT /note="Helical"
FT /evidence="ECO:0000256|PIRNR:PIRNR015596"
FT DOMAIN 150..230
FT /note="Steroid 5-alpha reductase C-terminal"
FT /evidence="ECO:0000259|PROSITE:PS50244"
SQ SEQUENCE 255 AA; 29237 MW; C66E1D8B14C45D79 CRC64;
MECRDAAVSG LSWTLIVVGG LYLWRQTRTG ARYGRYVEAN SRCCPARLAW FLQEFPAFLL
PLLLLLLPGQ RDAERRDDGR RLLLLGSFML HYFHRSFIYA FLTRGRPVPL FIVLCSAIFC
SLNGFLQAHY LLHCRRLEDT WLTDAHLAAG LLVFVVGMTI NIHSDHILRS LRKPGETVYR
IPHGGLFELV SGANFFGEIV QWCGFAVAAG SLPAFAFFFF TVCSIGPRAY QHHRDYQRRF
EDYPRCRKAL VPFIL
//
