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Protein

Biotin synthase

Gene

bioB

Organism
Synechococcus sp. (strain WH8102)
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

Pathway:ibiotin biosynthesis

This protein is involved in step 2 of the subpathway that synthesizes biotin from 7,8-diaminononanoate.UniRule annotation
Proteins known to be involved in the 2 steps of the subpathway in this organism are:
  1. ATP-dependent dethiobiotin synthetase BioD (BioD)
  2. Biotin synthase (bioB)
This subpathway is part of the pathway biotin biosynthesis, which is itself part of Cofactor biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes biotin from 7,8-diaminononanoate, the pathway biotin biosynthesis and in Cofactor biosynthesis.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi55 – 551Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi59 – 591Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi62 – 621Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi100 – 1001Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi132 – 1321Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi192 – 1921Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi264 – 2641Iron-sulfur 2 (2Fe-2S)UniRule annotation

GO - Molecular functioni

GO - Biological processi

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

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:SYNW0933
OrganismiSynechococcus sp. (strain WH8102)
Taxonomic identifieri84588 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaOscillatoriophycideaeChroococcalesSynechococcus
ProteomesiUP000001422 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 325325Biotin synthasePRO_0000381678Add
BLAST

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi84588.SYNW0933.

Structurei

3D structure databases

ProteinModelPortaliQ7U7P8.
SMRiQ7U7P8. Positions 6-316.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

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

Phylogenomic databases

eggNOGiCOG0502.
HOGENOMiHOG000239957.
KOiK01012.
OMAiADRFCMG.
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.

Q7U7P8-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTFTIRHDWT IAEIQALLEL PLMELLWQAQ YVHRAANPGY RVQLASLLSV
60 70 80 90 100
KTGGCEEDCA YCSQSIHNSS DVTAFEAQMQ VEPVLQRARA AKEAGADRFC
110 120 130 140 150
MGWAWREIRD GAPFEAMLSM VRGVRDLGME ACVTAGMLSD QQAERLAEAG
160 170 180 190 200
LTAYNHNLDT SPEHYDRIIS TRTYQERLET LQRVRKAGVT LCCGGIIGMG
210 220 230 240 250
ETLRDRASML QVLASMAPHP ESVPVNGLVA VEGTPLEDQA PFEPLELVRM
260 270 280 290 300
VATARILMPR ARVRLSAGRE SMSREAQILC LQAGADSIFY GDTLLTTGNP
310 320
DVEADRQLLA DAGVQANWQE CQTTA
Length:325
Mass (Da):35,789
Last modified:October 1, 2003 - v1
Checksum:iA82F79AEB7C8CC10
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BX569691 Genomic DNA. Translation: CAE07448.1.
RefSeqiWP_011127798.1. NC_005070.1.

Genome annotation databases

EnsemblBacteriaiCAE07448; CAE07448; SYNW0933.
KEGGisyw:SYNW0933.
PATRICi23833345. VBISynSp27240_0977.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BX569691 Genomic DNA. Translation: CAE07448.1.
RefSeqiWP_011127798.1. NC_005070.1.

3D structure databases

ProteinModelPortaliQ7U7P8.
SMRiQ7U7P8. Positions 6-316.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi84588.SYNW0933.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiCAE07448; CAE07448; SYNW0933.
KEGGisyw:SYNW0933.
PATRICi23833345. VBISynSp27240_0977.

Phylogenomic databases

eggNOGiCOG0502.
HOGENOMiHOG000239957.
KOiK01012.
OMAiADRFCMG.
OrthoDBiEOG622PMP.

Enzyme and pathway databases

UniPathwayiUPA00078; UER00162.

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: WH8102.

Entry informationi

Entry nameiBIOB_SYNPX
AccessioniPrimary (citable) accession number: Q7U7P8
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 28, 2009
Last sequence update: October 1, 2003
Last modified: July 22, 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.