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Protein

Biotin synthase

Gene

bioB

Organism
Caulobacter vibrioides (strain ATCC 19089 / CB15) (Caulobacter crescentus)
Status
Reviewed-Annotation score: -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 bindingi58Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation1
Metal bindingi62Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation1
Metal bindingi65Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation1
Metal bindingi102Iron-sulfur 2 (2Fe-2S)UniRule annotation1
Metal bindingi133Iron-sulfur 2 (2Fe-2S)UniRule annotation1
Metal bindingi193Iron-sulfur 2 (2Fe-2S)UniRule annotation1
Metal bindingi270Iron-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

BioCyciCAULO:CC3521-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:CC_3521
OrganismiCaulobacter vibrioides (strain ATCC 19089 / CB15) (Caulobacter crescentus)
Taxonomic identifieri190650 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaCaulobacteralesCaulobacteraceaeCaulobacter
Proteomesi
  • UP000001816 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00003812921 – 341Biotin synthaseAdd BLAST341

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi190650.CC_3521

Structurei

3D structure databases

ProteinModelPortaliQ9A2N5
SMRiQ9A2N5
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
OMAiADRFCMG

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
IPR034416 BATS_domain_containing
IPR002684 Biotin_synth/BioAB
IPR024177 Biotin_synthase
IPR006638 Elp3/MiaB/NifB
IPR007197 rSAM
PANTHERiPTHR22976 PTHR22976, 1 hit
PfamiView protein in Pfam
PF06968 BATS, 1 hit
PF04055 Radical_SAM, 1 hit
PIRSFiPIRSF001619 Biotin_synth, 1 hit
SFLDiSFLDF00272 biotin_synthase, 1 hit
SFLDG01060 BATS_domain_containing, 1 hit
SFLDG01278 biotin_synthase_like, 1 hit
SFLDS00029 Radical_SAM, 1 hit
SMARTiView protein in SMART
SM00876 BATS, 1 hit
SM00729 Elp3, 1 hit
TIGRFAMsiTIGR00433 bioB, 1 hit

Sequencei

Sequence statusi: Complete.

Q9A2N5-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSEITASPRH DWTLAEVEAL FALPFMELVF QAANVHRAHF DPSEIQLSQL
60 70 80 90 100
LSVKTGGCAE NCGYCSQSAH FKTGLKADKL MAADDVVAKA RAARDGGAQR
110 120 130 140 150
FCMGAAWREL KDRDLPKLTE MIGEVKALGL ETCATLGMLT ADQAKALKAA
160 170 180 190 200
GLDYYNHNLD TGPDYYKDVV TTRTYQERLD TLAHVRDAGM STCCGGIVGM
210 220 230 240 250
GEQRRDRAGL LHQLATLPAH PDSLPINGLV PISGTPLGDK VLSEGKAIDA
260 270 280 290 300
IEFVRTIAVA RIVCPKSMVR LSAGREGMSR ELQALCFMAG ANSIFVGGKL
310 320 330 340
LTTPLPGQDE DSQLFQDLDL KPMGGAVRVE AKADAAMVAA E
Length:341
Mass (Da):36,566
Last modified:June 1, 2001 - v1
Checksum:iE5D55FDCF19F3CB4
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE005673 Genomic DNA Translation: AAK25483.1
PIRiG87685
RefSeqiNP_422315.1, NC_002696.2
WP_010921350.1, NC_002696.2

Genome annotation databases

EnsemblBacteriaiAAK25483; AAK25483; CC_3521
GeneIDi940770
KEGGiccr:CC_3521
PATRICifig|190650.5.peg.3529

Similar proteinsi

Entry informationi

Entry nameiBIOB_CAUVC
AccessioniPrimary (citable) accession number: Q9A2N5
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 28, 2009
Last sequence update: June 1, 2001
Last modified: March 28, 2018
This is version 103 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
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Main funding by: National Institutes of Health