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P31214

- S5A2_RAT

UniProt

P31214 - S5A2_RAT

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Protein

3-oxo-5-alpha-steroid 4-dehydrogenase 2

Gene
Srd5a2
Organism
Rattus norvegicus (Rat)
Status
Reviewed - Annotation score: 5 out of 5 - Experimental evidence at protein leveli

Functioni

Converts testosterone (T) into 5-alpha-dihydrotestosterone (DHT) and progesterone or corticosterone into their corresponding 5-alpha-3-oxosteroids. It plays a central role in sexual differentiation and androgen physiology By similarity.

Catalytic activityi

A 3-oxo-5-alpha-steroid + NADP+ = a 3-oxo-Delta(4)-steroid + NADPH.1 Publication

Kineticsi

  1. KM=74 nM for testosterone1 Publication
  2. KM=42 nM for progesterone
  3. KM=170 nM for androstenedione
  4. KM=376 nM for corticosterone
  5. KM=11.2 µM for cortisol

Vmax=0.5 nmol/min/mg enzyme

pH dependencei

Optimally active at acidic pHs.

GO - Molecular functioni

  1. 3-oxo-5-alpha-steroid 4-dehydrogenase activity Source: RGD
  2. amide binding Source: RGD
  3. cholestenone 5-alpha-reductase activity Source: UniProtKB-EC

GO - Biological processi

  1. androgen biosynthetic process Source: RGD
  2. androgen metabolic process Source: RGD
  3. biphenyl metabolic process Source: RGD
  4. bone development Source: RGD
  5. cell differentiation Source: UniProtKB-KW
  6. dibenzo-p-dioxin metabolic process Source: RGD
  7. female genitalia development Source: RGD
  8. hippocampus development Source: RGD
  9. hypothalamus development Source: RGD
  10. male genitalia development Source: RGD
  11. male gonad development Source: RGD
  12. phthalate metabolic process Source: RGD
  13. response to drug Source: RGD
  14. response to follicle-stimulating hormone Source: RGD
  15. response to nutrient levels Source: RGD
  16. response to organic cyclic compound Source: RGD
  17. response to organic substance Source: RGD
  18. response to peptide hormone Source: RGD
  19. response to steroid hormone Source: RGD
  20. response to testosterone Source: RGD
  21. sex differentiation Source: RGD
  22. steroid biosynthetic process Source: RGD
  23. steroid catabolic process Source: RGD
Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Differentiation, Sexual differentiation

Keywords - Ligandi

NADP

Names & Taxonomyi

Protein namesi
Recommended name:
3-oxo-5-alpha-steroid 4-dehydrogenase 2 (EC:1.3.1.22)
Alternative name(s):
5 alpha-SR2
SR type 2
Steroid 5-alpha-reductase 2
Short name:
S5AR 2
Gene namesi
Name:Srd5a2
OrganismiRattus norvegicus (Rat)
Taxonomic identifieri10116 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaSciurognathiMuroideaMuridaeMurinaeRattus
ProteomesiUP000002494: Chromosome 6

Organism-specific databases

RGDi621480. Srd5a2.

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei8 – 2821Helical; Reviewed predictionAdd
BLAST
Transmembranei72 – 9221Helical; Reviewed predictionAdd
BLAST
Transmembranei146 – 16621Helical; Reviewed predictionAdd
BLAST
Transmembranei206 – 22621Helical; Reviewed predictionAdd
BLAST

GO - Cellular componenti

  1. cell body fiber Source: RGD
  2. cytoplasm Source: RGD
  3. endoplasmic reticulum membrane Source: UniProtKB-SubCell
  4. integral component of membrane Source: UniProtKB-KW
  5. neuronal cell body Source: RGD
Complete GO annotation...

Keywords - Cellular componenti

Endoplasmic reticulum, Membrane, Microsome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 2542543-oxo-5-alpha-steroid 4-dehydrogenase 2PRO_0000213680Add
BLAST

Proteomic databases

PRIDEiP31214.

Expressioni

Tissue specificityi

Expressed in high levels in the prostate and many other androgen-sensitive tissues.1 Publication

Gene expression databases

GenevestigatoriP31214.

Interactioni

Protein-protein interaction databases

STRINGi10116.ENSRNOP00000009254.

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiNOG282706.
GeneTreeiENSGT00510000046634.
HOGENOMiHOG000050133.
HOVERGENiHBG003402.
InParanoidiP31214.
KOiK12344.
OMAiHHRYYLK.
OrthoDBiEOG75QR56.
PhylomeDBiP31214.
TreeFamiTF314668.

Family and domain databases

InterProiIPR016636. 3-oxo-5-alpha-steroid_4-DH.
IPR001104. 3-oxo-5_a-steroid_4-DH_C.
[Graphical view]
PfamiPF02544. Steroid_dh. 1 hit.
[Graphical view]
PIRSFiPIRSF015596. 5_alpha-SR2. 1 hit.
PROSITEiPS50244. S5A_REDUCTASE. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P31214-1 [UniParc]FASTAAdd to Basket

« Hide

MQIVCHQVPV LAGSATLATM GTLILCLGKP ASYGKHTESV SSGVPFLPAR    50
IAWFLQELPS FVVSVGMLAW QPRSLFGPPG NVLLALFSAH YFHRTFIYSL 100
LTRGRPFPAV LFLRATAFCI GNGLLQAYYL VYCAEYPEEW YTDVRFSFGV 150
FLFILGMGIN IHSDYTLRQL RKPGEVIYRI PRGGLFTYVS GANFLGEIIE 200
WIGYALATWS VPAFAFAFFT LCFLGMQAFY HHRFYLKMFK DYPKSRKALI 250
PFIF 254
Length:254
Mass (Da):28,772
Last modified:July 1, 1993 - v1
Checksum:i8874C533DF3BD123
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
M95058 mRNA. Translation: AAA42182.1.
PIRiA44104.
RefSeqiNP_073202.1. NM_022711.4.
UniGeneiRn.9938.

Genome annotation databases

EnsembliENSRNOT00000008983; ENSRNOP00000009254; ENSRNOG00000027042.
GeneIDi64677.
KEGGirno:64677.
UCSCiRGD:621480. rat.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
M95058 mRNA. Translation: AAA42182.1 .
PIRi A44104.
RefSeqi NP_073202.1. NM_022711.4.
UniGenei Rn.9938.

3D structure databases

ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

STRINGi 10116.ENSRNOP00000009254.

Chemistry

BindingDBi P31214.
ChEMBLi CHEMBL5099.

Proteomic databases

PRIDEi P31214.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

Ensembli ENSRNOT00000008983 ; ENSRNOP00000009254 ; ENSRNOG00000027042 .
GeneIDi 64677.
KEGGi rno:64677.
UCSCi RGD:621480. rat.

Organism-specific databases

CTDi 6716.
RGDi 621480. Srd5a2.

Phylogenomic databases

eggNOGi NOG282706.
GeneTreei ENSGT00510000046634.
HOGENOMi HOG000050133.
HOVERGENi HBG003402.
InParanoidi P31214.
KOi K12344.
OMAi HHRYYLK.
OrthoDBi EOG75QR56.
PhylomeDBi P31214.
TreeFami TF314668.

Miscellaneous databases

NextBioi 613680.
PROi P31214.

Gene expression databases

Genevestigatori P31214.

Family and domain databases

InterProi IPR016636. 3-oxo-5-alpha-steroid_4-DH.
IPR001104. 3-oxo-5_a-steroid_4-DH_C.
[Graphical view ]
Pfami PF02544. Steroid_dh. 1 hit.
[Graphical view ]
PIRSFi PIRSF015596. 5_alpha-SR2. 1 hit.
PROSITEi PS50244. S5A_REDUCTASE. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. "Tissue distribution and kinetic characteristics of rat steroid 5 alpha-reductase isozymes. Evidence for distinct physiological functions."
    Normington K., Russell D.W.
    J. Biol. Chem. 267:19548-19554(1992) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA], CATALYTIC ACTIVITY, BIOPHYSICOCHEMICAL PROPERTIES, TISSUE SPECIFICITY.
    Tissue: Testis.

Entry informationi

Entry nameiS5A2_RAT
AccessioniPrimary (citable) accession number: P31214
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 1, 1993
Last sequence update: July 1, 1993
Last modified: May 14, 2014
This is version 103 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

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