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Protein

Biotin synthase

Gene

bioB

Organism
Bacillus cereus (strain ATCC 10987)
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 bindingi71 – 711Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi75 – 751Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi78 – 781Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi115 – 1151Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi147 – 1471Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi207 – 2071Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi277 – 2771Iron-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

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:BCE_4184
OrganismiBacillus cereus (strain ATCC 10987)
Taxonomic identifieri222523 [NCBI]
Taxonomic lineageiBacteriaFirmicutesBacilliBacillalesBacillaceaeBacillusBacillus cereus group
ProteomesiUP000002527 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 332332Biotin synthasePRO_0000381219Add
BLAST

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi222523.BCE_4184.

Structurei

3D structure databases

ProteinModelPortaliQ731I2.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

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

Phylogenomic databases

eggNOGiCOG0502.
HOGENOMiHOG000239958.
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.

Q731I2-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKQVQTKRDW KKLAYDVVEE KVITKEDAIA ILEADDTEIL EIMNAAYIIR
60 70 80 90 100
HHHFGKKVKL NMIINTKSGL CPEDCGYCSQ SIISEAPIDK YAWLTQEKIV
110 120 130 140 150
EGAHEAIRRK AGTYCIVASG RRPTDKEVNH VIGAVKEIRE TTDLKICCCL
160 170 180 190 200
GFLNEDQAGR LAEAGVHRYN HNLNTHVNNY ESICSTHTYD DRVDTVQKAK
210 220 230 240 250
QAGISPCSGA IFGMGETIEE RAEIAFELQR IDADSIPCNF LVAVKGTPLE
260 270 280 290 300
GQKELTPVEC LKVLAMMRFV NPTKEIRISG GREINLRSVQ PIGLFAANSI
310 320 330
FVGDYLTTAG QEPTADWGMI EDLGFEIEEC AL
Length:332
Mass (Da):36,980
Last modified:July 5, 2004 - v1
Checksum:i4357805DB937F2A4
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE017194 Genomic DNA. Translation: AAS43085.1.
RefSeqiNP_980477.1. NC_003909.8.
WP_000815867.1. NC_003909.8.

Genome annotation databases

EnsemblBacteriaiAAS43085; AAS43085; BCE_4184.
KEGGibca:BCE_4184.
PATRICi18857017. VBIBacCer118379_4007.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE017194 Genomic DNA. Translation: AAS43085.1.
RefSeqiNP_980477.1. NC_003909.8.
WP_000815867.1. NC_003909.8.

3D structure databases

ProteinModelPortaliQ731I2.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi222523.BCE_4184.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAS43085; AAS43085; BCE_4184.
KEGGibca:BCE_4184.
PATRICi18857017. VBIBacCer118379_4007.

Phylogenomic databases

eggNOGiCOG0502.
HOGENOMiHOG000239958.
KOiK01012.
OMAiYNINIQV.
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. "The genome sequence of Bacillus cereus ATCC 10987 reveals metabolic adaptations and a large plasmid related to Bacillus anthracis pXO1."
    Rasko D.A., Ravel J., Oekstad O.A., Helgason E., Cer R.Z., Jiang L., Shores K.A., Fouts D.E., Tourasse N.J., Angiuoli S.V., Kolonay J.F., Nelson W.C., Kolstoe A.-B., Fraser C.M., Read T.D.
    Nucleic Acids Res. 32:977-988(2004) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: ATCC 10987.

Entry informationi

Entry nameiBIOB_BACC1
AccessioniPrimary (citable) accession number: Q731I2
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 28, 2009
Last sequence update: July 5, 2004
Last modified: April 1, 2015
This is version 84 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

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.