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Protein

Biotin synthase

Gene

bioB

Organism
Sphingopyxis alaskensis (strain DSM 13593 / LMG 18877 / RB2256) (Sphingomonas alaskensis)
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: biotin 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)DescriptionActionsGraphical viewLength
Metal bindingi51Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation1
Metal bindingi55Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation1
Metal bindingi58Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation1
Metal bindingi95Iron-sulfur 2 (2Fe-2S)UniRule annotation1
Metal bindingi126Iron-sulfur 2 (2Fe-2S)UniRule annotation1
Metal bindingi186Iron-sulfur 2 (2Fe-2S)UniRule annotation1
Metal bindingi264Iron-sulfur 2 (2Fe-2S)UniRule annotation1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionTransferase
Biological processBiotin biosynthesis
Ligand2Fe-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:Sala_1222
OrganismiSphingopyxis alaskensis (strain DSM 13593 / LMG 18877 / RB2256) (Sphingomonas alaskensis)
Taxonomic identifieri317655 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaSphingomonadalesSphingomonadaceaeSphingopyxis
Proteomesi
  • UP000006578 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00003816401 – 329Biotin synthaseAdd BLAST329

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi317655.Sala_1222.

Structurei

3D structure databases

ProteinModelPortaliQ1GTT5.
SMRiQ1GTT5.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

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

Phylogenomic databases

eggNOGiENOG4105CZF. Bacteria.
COG0502. LUCA.
HOGENOMiHOG000239957.
KOiK01012.
OMAiPFDFIRM.
OrthoDBiPOG091S027E.

Family and domain databases

Gene3Di3.20.20.70. 1 hit.
HAMAPiMF_01694. BioB. 1 hit.
InterProiView protein in InterPro
IPR013785. Aldolase_TIM.
IPR010722. BATS_dom.
IPR002684. Biotin_synth/BioAB.
IPR024177. Biotin_synthase.
IPR006638. Elp3/MiaB/NifB.
IPR007197. rSAM.
PfamiView protein in Pfam
PF06968. BATS. 1 hit.
PF04055. Radical_SAM. 1 hit.
PIRSFiPIRSF001619. Biotin_synth. 1 hit.
SMARTiView protein in SMART
SM00876. BATS. 1 hit.
SM00729. Elp3. 1 hit.
TIGRFAMsiTIGR00433. bioB. 1 hit.

Sequencei

Sequence statusi: Complete.

Q1GTT5-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MRTDWTREEI AALFDLPFDE LMWEAQGVHR RHHARGEIQL CTLLSIKTGG
60 70 80 90 100
CVEDCGYCSQ SAHADTGLKA TKLMDVRAVL QAAAQAKDAG SKRFCMGAAW
110 120 130 140 150
RNPKDRDMPA IVEMIEGVRA MGMETCMTLG MLSKEQAQVL GMAGLDYYNH
160 170 180 190 200
NIDTSPEHYG NVITTRSFQD RLDTLEEVRA AGINVCSGGI VGMGETRADR
210 220 230 240 250
VGFIHTLATL PEHPGSVPIN ALVPVKGTVL GDMLADTPLA KIDDIEFVRT
260 270 280 290 300
VAVARITMPK SMVRLSAGRE SMSEATQALC FMAGANSIFT GDKLLTTANA
310 320
GDNADAALFA KLGLRPMESE EPMRMEAAE
Length:329
Mass (Da):35,642
Last modified:June 27, 2006 - v1
Checksum:i87804FD031D59A5E
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000356 Genomic DNA. Translation: ABF52937.1.
RefSeqiWP_011541522.1. NC_008048.1.

Genome annotation databases

EnsemblBacteriaiABF52937; ABF52937; Sala_1222.
KEGGisal:Sala_1222.
PATRICi23691640. VBISphAla23391_1259.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000356 Genomic DNA. Translation: ABF52937.1.
RefSeqiWP_011541522.1. NC_008048.1.

3D structure databases

ProteinModelPortaliQ1GTT5.
SMRiQ1GTT5.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi317655.Sala_1222.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABF52937; ABF52937; Sala_1222.
KEGGisal:Sala_1222.
PATRICi23691640. VBISphAla23391_1259.

Phylogenomic databases

eggNOGiENOG4105CZF. Bacteria.
COG0502. LUCA.
HOGENOMiHOG000239957.
KOiK01012.
OMAiPFDFIRM.
OrthoDBiPOG091S027E.

Enzyme and pathway databases

UniPathwayiUPA00078; UER00162.

Family and domain databases

Gene3Di3.20.20.70. 1 hit.
HAMAPiMF_01694. BioB. 1 hit.
InterProiView protein in InterPro
IPR013785. Aldolase_TIM.
IPR010722. BATS_dom.
IPR002684. Biotin_synth/BioAB.
IPR024177. Biotin_synthase.
IPR006638. Elp3/MiaB/NifB.
IPR007197. rSAM.
PfamiView protein in Pfam
PF06968. BATS. 1 hit.
PF04055. Radical_SAM. 1 hit.
PIRSFiPIRSF001619. Biotin_synth. 1 hit.
SMARTiView protein in SMART
SM00876. BATS. 1 hit.
SM00729. Elp3. 1 hit.
TIGRFAMsiTIGR00433. bioB. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiBIOB_SPHAL
AccessioniPrimary (citable) accession number: Q1GTT5
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 28, 2009
Last sequence update: June 27, 2006
Last modified: February 15, 2017
This is version 73 of the entry and version 1 of the sequence. See 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

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 one 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.