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Protein

Biotin synthase

Gene

bioB

Organism
Gloeobacter violaceus (strain PCC 7421)
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 = biotin + (sulfur carrier) + 2 L-methionine + 2 5'-deoxyadenosine.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 bindingi54 – 541Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi58 – 581Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi61 – 611Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi98 – 981Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi130 – 1301Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi190 – 1901Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi262 – 2621Iron-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

BioCyciGVIO251221:GH9A-4380-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:glr4328
OrganismiGloeobacter violaceus (strain PCC 7421)
Taxonomic identifieri251221 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaGloeobacteriaGloeobacteralesGloeobacter
ProteomesiUP000000557: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 318318Biotin synthasePRO_0000381408Add
BLAST

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi251221.gvip564.

Structurei

3D structure databases

ProteinModelPortaliQ7NDA8.
SMRiQ7NDA8. Positions 8-317.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

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

Phylogenomic databases

eggNOGiCOG0502.
InParanoidiQ7NDA8.
KOiK01012.
OMAiCGYCPQS.
OrthoDBiEOG622PMP.
PhylomeDBiQ7NDA8.

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.

Q7NDA8-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MCRAPMPSTV SEISRIYHQP LPDLLFEAQR VHRAHHDPRE VQLCTLSNIK
60 70 80 90 100
TGLCPENCGY CSQSVHHKSG LAAQELSSLD AVMAEAQAAK AAGSTRFCMG
110 120 130 140 150
AAWREIKDGP PFERVLEMVR SVAALDMEVC CTLGMVKPHQ AERLKQAGLT
160 170 180 190 200
AYNHNLDTGP GYYPQVVTTR TYKDRLETIR AVGAAGISVC CGGILGMGES
210 220 230 240 250
LTDRFELLES LGSLDPTPES IPINCLVPVA GTPLADSSPV EPLDLVRMVA
260 270 280 290 300
TTRILFPDAM VRLSAGRLQM SEELQALCFL AGANSIFTGP KLLTTPNPEH
310
SHDQKLLEKL GMEPKTTQ
Length:318
Mass (Da):34,494
Last modified:December 15, 2003 - v1
Checksum:i570AC31DFCBB9905
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000045 Genomic DNA. Translation: BAC92269.1.
RefSeqiNP_927274.1. NC_005125.1.

Genome annotation databases

EnsemblBacteriaiBAC92269; BAC92269; BAC92269.
GeneIDi2602731.
KEGGigvi:gvip564.
PATRICi22048153. VBIGloVio86258_4358.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000045 Genomic DNA. Translation: BAC92269.1.
RefSeqiNP_927274.1. NC_005125.1.

3D structure databases

ProteinModelPortaliQ7NDA8.
SMRiQ7NDA8. Positions 8-317.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi251221.gvip564.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiBAC92269; BAC92269; BAC92269.
GeneIDi2602731.
KEGGigvi:gvip564.
PATRICi22048153. VBIGloVio86258_4358.

Phylogenomic databases

eggNOGiCOG0502.
InParanoidiQ7NDA8.
KOiK01012.
OMAiCGYCPQS.
OrthoDBiEOG622PMP.
PhylomeDBiQ7NDA8.

Enzyme and pathway databases

UniPathwayiUPA00078; UER00162.
BioCyciGVIO251221:GH9A-4380-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: PCC 7421.

Entry informationi

Entry nameiBIOB_GLOVI
AccessioniPrimary (citable) accession number: Q7NDA8
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 28, 2009
Last sequence update: December 15, 2003
Last modified: January 7, 2015
This is version 82 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.