Reviewed, UniProtKB/Swiss-Prot P26670 (3BHS_VACCW)

Names and origin

Protein names

Recommended name:
    3 beta-hydroxysteroid dehydrogenase/Delta 5-->4-isomerase
      Short name=3-beta-HSD
Including the following 2 domains:
    1- Recommended name:
            3-beta-hydroxy-Delta(5)-steroid dehydrogenase
              EC=1.1.1.145
        Alternative name(s):
            3-beta-hydroxy-5-ene steroid dehydrogenase
            Progesterone reductase
    2- Recommended name:
            Steroid Delta-isomerase
              EC=5.3.3.1
        Alternative name(s):
            Delta-5-3-ketosteroid isomerase

Gene names

Ordered Locus Names:	VACWR170
ORF Names:	SALF7L

Organism

Vaccinia virus (strain Western Reserve) (VACV) (Vaccinia virus (strain WR))

Taxonomic identifier

10254 [NCBI]

Taxonomic lineage

Viruses › dsDNA viruses, no RNA stage › Poxviridae › Chordopoxvirinae › Orthopoxvirus

Virus host

Bos taurus (Bovine) [TaxID: 9913]

Protein attributes

Sequence length	346 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	3-beta-HSD is a bifunctional enzyme, that catalyzes the oxidative conversion of Delta(5)-ene-3-beta-hydroxy steroid, and the oxidative conversion of ketosteroids. The 3-beta-HSD enzymatic system plays a crucial role in the biosynthesis of all classes of hormonal steroids. Ref.4
Catalytic activity	A 3-beta-hydroxy-Delta(5)-steroid + NAD+ = a 3-oxo-Delta(5)-steroid + NADH. A 3-oxo-Delta(5)-steroid = a 3-oxo-Delta(4)-steroid.
Pathway	Lipid metabolism; steroid biosynthesis.
Sequence similarities	Belongs to the 3-beta-HSD family.

Ontologies

Keywords
Biological process	Steroidogenesis
Ligand	NAD
Molecular function	Isomerase Oxidoreductase
Technical term	Multifunctional enzyme
Gene Ontology (GO)
Biological process	C21-steroid hormone biosynthetic process Inferred from electronic annotation. Source: UniProtKB-KW oxidation reduction Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	3-beta-hydroxy-delta5-steroid dehydrogenase activity Inferred from electronic annotation. Source: EC binding Inferred from electronic annotation. Source: InterPro steroid delta-isomerase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 346	346	3 beta-hydroxysteroid dehydrogenase/Delta 5-->4-isomerase		PRO_0000087795
Sites
	Active site	147	1	Proton acceptor By similarity
	Binding site	151	1	NAD By similarity

Sequences

	Sequence		Length	Mass (Da)
	P26670-1 [UniParc]. Last modified August 1, 1992. Version 1. Checksum: 3107A2B7F442CCD9	FASTA	346	39,396
	10 20 30 40 50 60 MAVYAVTGGA GFLGRYIVKL LISADDVQEI RVIDIVEDPQ PITSKVKVIN YIQCDINDFD 70 80 90 100 110 120 KVREALDGVN LIIHTAALVD VFGKYTDNEI MKVNYYGTQT ILAACVDLGI KYLIYTSSME 130 140 150 160 170 180 AIGPNKHGDP FIGHEHTLYD ISPGHVYAKS KRMAEQLVMK ANNSVIMNGA KLYTCCLRPT 190 200 210 220 230 240 GIYGEGDKLT KVFYEQCKQH GNIMYRTVDD DAVHSRVYVG NVAWMHVLAA KYIQYPGSEI 250 260 270 280 290 300 KGNAYFCYDY SPSCSYDMFN LLLMKPLGIE QGSRIPRWML KMYACKNDMK RILFRKPSLL 310 320 330 340 NNYTLKISNT TFEVRTNNAE LDFNYSPIFN VDVAFERTRK WLEESE

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Sequence analysis, expression, and deletion of a vaccinia virus gene encoding a homolog of profilin, a eukaryotic actin-binding protein." Blasco R., Cole N.B., Moss B. J. Virol. 65:4598-4608(1991) [PubMed: 1870190] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"Nucleotide sequence of 42 kbp of vaccinia virus strain WR from near the right inverted terminal repeat." Smith G.L., Chan Y.S., Howard S.T. J. Gen. Virol. 72:1349-1376(1991) [PubMed: 2045793] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[3]	"Sequencing of the coding region of Vaccinia-WR to an average 9-fold redundancy and an error rate of 0.16/10kb." Esposito J.J., Frace A.M., Sammons S.A., Olsen-Rasmussen M., Osborne J., Wohlhueter R. Submitted (FEB-2003) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
[4]	"Steroid hormone synthesis by a vaccinia enzyme: a new type of virus virulence factor." Moore J.B., Smith G.L. EMBO J. 11:1973-1980(1992) [PubMed: 1582424] [Abstract] Cited for: FUNCTION.

Cross-references

Sequence databases
EMBLGenBankDDBJ	M72474 Genomic DNA. Translation: AAA48311.1. D11079 Genomic DNA. Translation: BAA01818.1. AY243312 Genomic DNA. Translation: AAO89449.1.
PIR	WMVZ2W. E40897.
RefSeq	YP_233052.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	3707700.
Family and domain databases
InterPro	IPR002225. 3Beta_OHSteriod_DH/Estase. IPR016040. NAD(P)-bd_dom. [Graphical view]
Gene3D	G3DSA:3.40.50.720. NAD(P)-bd. 1 hit.
Pfam	PF01073. 3Beta_HSD. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

3BHS_VACCW

Accession

Primary (citable) accession number: P26670
Secondary accession number(s): Q76ZN3

Entry history

Integrated into UniProtKB/Swiss-Prot:	August 1, 1992
Last sequence update:	August 1, 1992
Last modified:	June 16, 2009
This is version 52 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

Virus (Virus annotation project)