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Protein

Biotin synthase

Gene

bioB

Organism
Helicobacter hepaticus (strain ATCC 51449 / 3B1)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Catalyzes the conversion of dethiobiotin (DTB) to biotin by the insertion of a sulfur atom into dethiobiotin via a radical-based mechanism.UniRule annotation

Catalytic activityi

Dethiobiotin + sulfur-(sulfur carrier) + 2 S-adenosyl-L-methionine + 2 reduced [2Fe-2S] ferredoxin = biotin + (sulfur carrier) + 2 L-methionine + 2 5'-deoxyadenosine + 2 oxidized [2Fe-2S] ferredoxin.UniRule annotation

Cofactori

Protein has several cofactor binding sites:
  • [4Fe-4S] clusterUniRule annotationNote: Binds 1 [4Fe-4S] cluster. The cluster is coordinated with 3 cysteines and an exchangeable S-adenosyl-L-methionine.UniRule annotation
  • [2Fe-2S] clusterUniRule annotationNote: Binds 1 [2Fe-2S] cluster. The cluster is coordinated with 3 cysteines and 1 arginine.UniRule annotation

Pathwayi

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi21 – 211Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi25 – 251Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi28 – 281Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi65 – 651Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi100 – 1001Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi225 – 2251Iron-sulfur 2 (2Fe-2S)UniRule annotation

GO - Molecular functioni

  1. 2 iron, 2 sulfur cluster binding Source: UniProtKB-KW
  2. 4 iron, 4 sulfur cluster binding Source: UniProtKB-KW
  3. biotin synthase activity Source: UniProtKB-HAMAP
  4. iron ion binding Source: UniProtKB-HAMAP

GO - Biological processi

  1. biotin biosynthetic process Source: UniProtKB-HAMAP
Complete GO annotation...

Keywords - Molecular functioni

Transferase

Keywords - Biological processi

Biotin biosynthesis

Keywords - Ligandi

2Fe-2S, 4Fe-4S, Iron, Iron-sulfur, Metal-binding, S-adenosyl-L-methionine

Enzyme and pathway databases

BioCyciHHEP235279:GHUA-1771-MONOMER.
UniPathwayiUPA00078; UER00162.

Names & Taxonomyi

Protein namesi
Recommended name:
Biotin synthaseUniRule annotation (EC:2.8.1.6UniRule annotation)
Gene namesi
Name:bioBUniRule annotation
Ordered Locus Names:HH_1731
OrganismiHelicobacter hepaticus (strain ATCC 51449 / 3B1)
Taxonomic identifieri235279 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaEpsilonproteobacteriaCampylobacteralesHelicobacteraceaeHelicobacter
ProteomesiUP000002495 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 283283Biotin synthasePRO_0000381423Add
BLAST

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi235279.HH1731.

Structurei

3D structure databases

ProteinModelPortaliQ7VFE6.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the radical SAM superfamily. Biotin synthase family.UniRule annotation

Phylogenomic databases

eggNOGiCOG0502.
KOiK01012.
OMAiYNINIQV.
OrthoDBiEOG622PMP.

Family and domain databases

Gene3Di3.20.20.70. 1 hit.
HAMAPiMF_01694. BioB.
InterProiIPR013785. Aldolase_TIM.
IPR010722. BATS_dom.
IPR002684. Biotin_synth/BioAB.
IPR024177. Biotin_synthase.
IPR006638. Elp3/MiaB/NifB.
IPR007197. rSAM.
[Graphical view]
PfamiPF06968. BATS. 1 hit.
PF04055. Radical_SAM. 1 hit.
[Graphical view]
PIRSFiPIRSF001619. Biotin_synth. 1 hit.
SMARTiSM00876. BATS. 1 hit.
SM00729. Elp3. 1 hit.
[Graphical view]
TIGRFAMsiTIGR00433. bioB. 1 hit.

Sequencei

Sequence statusi: Complete.

Q7VFE6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MQKISNEIFL CSICNVSSGD CPEDCKYCTQ SAHYGTQIQR YKNKSIDKIV
60 70 80 90 100
QEAKTLREYG ALGFCLVTAG RSLESQKCEY IAKAASAIKK ADLGLHIIAC
110 120 130 140 150
CGSADVDSLK YLKTNGVDSY NHNLETSKEF FPHICTTHTW KERFETCENT
160 170 180 190 200
LKAELGLLSG GIFGLGESWG DRIELLKHLQ ILSPHTSPLN FYIANESLPL
210 220 230 240 250
PMQTLSPQEA LECVTLAREY LPNTRLMIAG GREAVFGDNQ KPLFEAGING
260 270 280
VVLGDYLTTD GKAPKDDVAM IESYGYVAAT NCH
Length:283
Mass (Da):31,166
Last modified:October 1, 2003 - v1
Checksum:i84B9F5289D27EA69
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE017125 Genomic DNA. Translation: AAP78328.1.
RefSeqiNP_861262.1. NC_004917.1.

Genome annotation databases

EnsemblBacteriaiAAP78328; AAP78328; HH_1731.
KEGGihhe:HH1731.
PATRICi20590898. VBIHelHep90276_1707.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE017125 Genomic DNA. Translation: AAP78328.1.
RefSeqiNP_861262.1. NC_004917.1.

3D structure databases

ProteinModelPortaliQ7VFE6.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi235279.HH1731.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAP78328; AAP78328; HH_1731.
KEGGihhe:HH1731.
PATRICi20590898. VBIHelHep90276_1707.

Phylogenomic databases

eggNOGiCOG0502.
KOiK01012.
OMAiYNINIQV.
OrthoDBiEOG622PMP.

Enzyme and pathway databases

UniPathwayiUPA00078; UER00162.
BioCyciHHEP235279:GHUA-1771-MONOMER.

Family and domain databases

Gene3Di3.20.20.70. 1 hit.
HAMAPiMF_01694. BioB.
InterProiIPR013785. Aldolase_TIM.
IPR010722. BATS_dom.
IPR002684. Biotin_synth/BioAB.
IPR024177. Biotin_synthase.
IPR006638. Elp3/MiaB/NifB.
IPR007197. rSAM.
[Graphical view]
PfamiPF06968. BATS. 1 hit.
PF04055. Radical_SAM. 1 hit.
[Graphical view]
PIRSFiPIRSF001619. Biotin_synth. 1 hit.
SMARTiSM00876. BATS. 1 hit.
SM00729. Elp3. 1 hit.
[Graphical view]
TIGRFAMsiTIGR00433. bioB. 1 hit.
ProtoNetiSearch...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: ATCC 51449 / 3B1.

Entry informationi

Entry nameiBIOB_HELHP
AccessioniPrimary (citable) accession number: Q7VFE6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 28, 2009
Last sequence update: October 1, 2003
Last modified: April 29, 2015
This is version 88 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.