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Protein

Biotin synthase

Gene

bioB

Organism
Nostoc sp. (strain PCC 7120 / UTEX 2576)
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 bindingi56 – 561Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi60 – 601Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi63 – 631Iron-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

  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:alr1921
OrganismiNostoc sp. (strain PCC 7120 / UTEX 2576)
Taxonomic identifieri103690 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaNostocalesNostocaceaeNostoc
ProteomesiUP000002483: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 335335Biotin synthasePRO_0000381202Add
BLAST

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi103690.alr1921.

Structurei

3D structure databases

ProteinModelPortaliQ8YVQ3.
SMRiQ8YVQ3. Positions 7-319.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

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

Phylogenomic databases

eggNOGiCOG0502.
HOGENOMiHOG000239957.
KOiK01012.
OMAiCGYCPQS.
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.

Q8YVQ3-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MSVGRIRYDW HKAEIRAVYD TPLLELIYQA ASVHRQFHNP KQIQVCKLIS
60 70 80 90 100
IKTGACPEDC SYCAQSSRYQ TEVKPQALLD KQTVVEIAQN AKQKGVSRVC
110 120 130 140 150
MGAAWREVRD NSQFDRVLEM VKDVTDMGLE VCCTLGMLTS EQAKKLETAG
160 170 180 190 200
LYAYNHNLDT SSDYYSTIIT TRTYGDRLNT IENVRQTNVT VCSGGILGLG
210 220 230 240 250
ESIDDRVAML QTLATLNPHP ESVPINILSQ VEGTPLEDQP DVPVWDVVRM
260 270 280 290 300
IATARIVMPT SDVRLSAGRA RLSQVEQAFC FMAGANSIFS SDDNKMLTVT
310 320 330
TPCPDYDADQ EMLNLLGLEM RPPSQRPQPV VMGNS
Length:335
Mass (Da):37,245
Last modified:March 1, 2002 - v1
Checksum:i2E5ED771895351F6
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000019 Genomic DNA. Translation: BAB73620.1.
PIRiAC2046.
RefSeqiNP_485961.1. NC_003272.1.
WP_010996085.1. NC_003272.1.

Genome annotation databases

EnsemblBacteriaiBAB73620; BAB73620; BAB73620.
GeneIDi1105513.
KEGGiana:alr1921.
PATRICi22773938. VBINosSp37423_2445.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000019 Genomic DNA. Translation: BAB73620.1.
PIRiAC2046.
RefSeqiNP_485961.1. NC_003272.1.
WP_010996085.1. NC_003272.1.

3D structure databases

ProteinModelPortaliQ8YVQ3.
SMRiQ8YVQ3. Positions 7-319.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi103690.alr1921.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiBAB73620; BAB73620; BAB73620.
GeneIDi1105513.
KEGGiana:alr1921.
PATRICi22773938. VBINosSp37423_2445.

Phylogenomic databases

eggNOGiCOG0502.
HOGENOMiHOG000239957.
KOiK01012.
OMAiCGYCPQS.
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: PCC 7120 / UTEX 2576.

Entry informationi

Entry nameiBIOB_NOSS1
AccessioniPrimary (citable) accession number: Q8YVQ3
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 28, 2009
Last sequence update: March 1, 2002
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.