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Protein

Biotin synthase

Gene

bioB

Organism
Nitratiruptor sp. (strain SB155-2)
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 bindingi16 – 161Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi20 – 201Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi23 – 231Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi60 – 601Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi95 – 951Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi153 – 1531Iron-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

BioCyciNSP387092:GHA5-1698-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:NIS_1653
OrganismiNitratiruptor sp. (strain SB155-2)
Taxonomic identifieri387092 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaEpsilonproteobacteriaNitratiruptor
ProteomesiUP000001118 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 279279Biotin synthasePRO_0000381506Add
BLAST

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi387092.NIS_1653.

Structurei

3D structure databases

ProteinModelPortaliA6Q5K0.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

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

Phylogenomic databases

eggNOGiCOG0502.
HOGENOMiHOG000239958.
KOiK01012.
OMAiIATSCHE.
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.

A6Q5K0-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKVYLCAISN ISSGVCAEDC KFCTQSTKYR ADIPRYKYKS IETIVEEAKK
60 70 80 90 100
AKAAKAIGFC LVTAGKGIDD KILDFVTQAA RAVKKEVPDI SLIGCNGTAE
110 120 130 140 150
VWQLKELKHA GIDNYNHNLE TAKSFYEQIC STHSWEERYQ TCLNAKEAGL
160 170 180 190 200
NLCTGGIFGL GESKEQREEM MDQIASLEPM SVPINFYHPN EALPLPQTTI
210 220 230 240 250
DPSDALSIIQ DMRKRVPNAM IMVAGGRELV FGEQWPKILD AGANAIVIGD
260 270
YLTTKGERPD KDIQTLQKLG VEIATSCHE
Length:279
Mass (Da):30,844
Last modified:August 20, 2007 - v1
Checksum:i3455035E679A4F25
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AP009178 Genomic DNA. Translation: BAF70759.1.
RefSeqiWP_012083022.1. NC_009662.1.
YP_001357116.1. NC_009662.1.

Genome annotation databases

EnsemblBacteriaiBAF70759; BAF70759; NIS_1653.
KEGGinis:NIS_1653.
PATRICi22685468. VBINitSp82229_1731.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AP009178 Genomic DNA. Translation: BAF70759.1.
RefSeqiWP_012083022.1. NC_009662.1.
YP_001357116.1. NC_009662.1.

3D structure databases

ProteinModelPortaliA6Q5K0.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi387092.NIS_1653.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiBAF70759; BAF70759; NIS_1653.
KEGGinis:NIS_1653.
PATRICi22685468. VBINitSp82229_1731.

Phylogenomic databases

eggNOGiCOG0502.
HOGENOMiHOG000239958.
KOiK01012.
OMAiIATSCHE.
OrthoDBiEOG622PMP.

Enzyme and pathway databases

UniPathwayiUPA00078; UER00162.
BioCyciNSP387092:GHA5-1698-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. "Deep-sea vent epsilon-proteobacterial genomes provide insights into emergence of pathogens."
    Nakagawa S., Takaki Y., Shimamura S., Reysenbach A.-L., Takai K., Horikoshi K.
    Proc. Natl. Acad. Sci. U.S.A. 104:12146-12150(2006) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: SB155-2.

Entry informationi

Entry nameiBIOB_NITSB
AccessioniPrimary (citable) accession number: A6Q5K0
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 27, 2009
Last sequence update: August 20, 2007
Last modified: March 31, 2015
This is version 55 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.