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Protein

Biotin synthase

Gene

bioB

Organism
Mycobacterium tuberculosis (strain ATCC 25177 / H37Ra)
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 bindingi85Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation1
Metal bindingi89Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation1
Metal bindingi92Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation1
Metal bindingi128Iron-sulfur 2 (2Fe-2S)UniRule annotation1
Metal bindingi161Iron-sulfur 2 (2Fe-2S)UniRule annotation1
Metal bindingi220Iron-sulfur 2 (2Fe-2S)UniRule annotation1
Metal bindingi290Iron-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:MRA_1599
OrganismiMycobacterium tuberculosis (strain ATCC 25177 / H37Ra)
Taxonomic identifieri419947 [NCBI]
Taxonomic lineageiBacteriaActinobacteriaCorynebacterialesMycobacteriaceaeMycobacteriumMycobacterium tuberculosis complex
Proteomesi
  • UP000001988 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00003814861 – 349Biotin synthaseAdd BLAST349

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi419947.MtubH3_010100022348

Structurei

3D structure databases

ProteinModelPortaliA5U2U5
SMRiA5U2U5
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

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

Phylogenomic databases

eggNOGiENOG4105CZF Bacteria
COG0502 LUCA
HOGENOMiHOG000239958
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
SFLDiSFLDG01060 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.

A5U2U5-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTQAATRPTN DAGQDGGNNS DILVVARQQV LQRGEGLNQD QVLAVLQLPD
60 70 80 90 100
DRLEELLALA HEVRMRWCGP EVEVEGIISL KTGGCPEDCH FCSQSGLFAS
110 120 130 140 150
PVRSAWLDIP SLVEAAKQTA KSGATEFCIV AAVRGPDERL MAQVAAGIEA
160 170 180 190 200
IRNEVEINIA CSLGMLTAEQ VDQLAARGVH RYNHNLETAR SFFANVVTTH
210 220 230 240 250
TWEERWQTLS MVRDAGMEVC CGGILGMGET LQQRAEFAAE LAELGPDEVP
260 270 280 290 300
LNFLNPRPGT PFADLEVMPV GDALKAVAAF RLALPRTMLR FAGGREITLG
310 320 330 340
DLGAKRGILG GINAVIVGNY LTTLGRPAEA DLELLDELQM PLKALNASL
Length:349
Mass (Da):37,550
Last modified:July 10, 2007 - v1
Checksum:iF3B0A5821B3F14A2
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000611 Genomic DNA Translation: ABQ73345.1
RefSeqiWP_003898934.1, NZ_CP016972.1

Genome annotation databases

EnsemblBacteriaiABQ73345; ABQ73345; MRA_1599
KEGGimra:MRA_1599

Similar proteinsi

Entry informationi

Entry nameiBIOB_MYCTA
AccessioniPrimary (citable) accession number: A5U2U5
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 28, 2009
Last sequence update: July 10, 2007
Last modified: May 23, 2018
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

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