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Protein

Biotin synthase

Gene

bioB

Organism
Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)
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 bindingi53 – 531Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi57 – 571Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi60 – 601Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi97 – 971Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi128 – 1281Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi188 – 1881Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi260 – 2601Iron-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

BioCyciSENT99287:GCTI-799-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:STM0794
OrganismiSalmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)
Taxonomic identifieri99287 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacterialesEnterobacteriaceaeSalmonella
ProteomesiUP000001014: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 346346Biotin synthasePRO_0000185561Add
BLAST

Proteomic databases

PRIDEiP12678.

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi99287.STM0794.

Structurei

3D structure databases

ProteinModelPortaliP12678.
SMRiP12678. Positions 5-315.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

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

Phylogenomic databases

HOGENOMiHOG000239957.
KOiK01012.
OMAiCGYCPQS.
OrthoDBiEOG622PMP.
PhylomeDBiP12678.

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.

P12678-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MARHPRWTLS QVTELFEKPL LELLFEAQQI HRQHFDPQQV QVSTLLSIKT
60 70 80 90 100
GACPEDCKYC PQSSRYKTGL EAERLMEVEQ VLDSARKAKN AGSTRFCMGA
110 120 130 140 150
AWRNPHERDM PYLEKIVQGV KAMGLETCMT LGMLNESQAQ RLANAGLDYY
160 170 180 190 200
NHNLDTSPEF YGNIITTRTY QERLDTLEKV REAGIKVCSG GIVGLGETVT
210 220 230 240 250
DRAGLLLQLA NLPTPPESVP INMLVKVKGT PLADNDDVDA FDFIRTIAVA
260 270 280 290 300
RIMMPTSYVR LSAGREQMNE QTQAMCFMAG ANSIFYGCKL LTTPNPAEDK
310 320 330 340
DLQLFRKLGL NPQQTRVLAG DNEQQQRLEQ TLMTPDTDDY YNAAAL
Length:346
Mass (Da):38,804
Last modified:December 13, 2001 - v2
Checksum:iA6C05B0C0F6BF42E
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE006468 Genomic DNA. Translation: AAL19731.1.
M21923 Genomic DNA. No translation available.
RefSeqiNP_459772.1. NC_003197.1.

Genome annotation databases

EnsemblBacteriaiAAL19731; AAL19731; STM0794.
GeneIDi1252314.
KEGGistm:STM0794.
PATRICi32379961. VBISalEnt20916_0828.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE006468 Genomic DNA. Translation: AAL19731.1.
M21923 Genomic DNA. No translation available.
RefSeqiNP_459772.1. NC_003197.1.

3D structure databases

ProteinModelPortaliP12678.
SMRiP12678. Positions 5-315.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi99287.STM0794.

Proteomic databases

PRIDEiP12678.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAL19731; AAL19731; STM0794.
GeneIDi1252314.
KEGGistm:STM0794.
PATRICi32379961. VBISalEnt20916_0828.

Phylogenomic databases

HOGENOMiHOG000239957.
KOiK01012.
OMAiCGYCPQS.
OrthoDBiEOG622PMP.
PhylomeDBiP12678.

Enzyme and pathway databases

UniPathwayiUPA00078; UER00162.
BioCyciSENT99287:GCTI-799-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

« Hide 'large scale' publications
  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: LT2 / SGSC1412 / ATCC 700720.
  2. "Transcriptional regulation and gene arrangement of Escherichia coli, Citrobacter freundii and Salmonella typhimurium biotin operons."
    Shiuan D., Campbell A.
    Gene 67:203-211(1988) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-5.

Entry informationi

Entry nameiBIOB_SALTY
AccessioniPrimary (citable) accession number: P12678
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 1, 1989
Last sequence update: December 13, 2001
Last modified: March 4, 2015
This is version 122 of the entry and version 2 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.