Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

Biotin synthase

Gene

bioB

Organism
Prochlorococcus marinus (strain NATL2A)
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

Pathway: 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)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi82 – 821Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi86 – 861Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi89 – 891Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi126 – 1261Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi158 – 1581Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi218 – 2181Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi290 – 2901Iron-sulfur 2 (2Fe-2S)UniRule annotation

GO - Molecular functioni

GO - Biological processi

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

BioCyciPMAR59920:GI1O-1473-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:PMN2A_0655
OrganismiProchlorococcus marinus (strain NATL2A)
Taxonomic identifieri59920 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaProchloralesProchlorococcaceaeProchlorococcus
ProteomesiUP000002535 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 345345Biotin synthasePRO_0000381548Add
BLAST

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Structurei

3D structure databases

ProteinModelPortaliQ46K32.
SMRiQ46K32. Positions 33-343.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

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

Phylogenomic databases

eggNOGiCOG0502.
HOGENOMiHOG000239957.
KOiK01012.
OMAiCGYCPQS.
OrthoDBiEOG622PMP.
PhylomeDBiQ46K32.

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.

Q46K32-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTLINPNIQE SNKLKFKDES YLDFNSIKGG DIRHDWSSEE IKEILDLPLM
60 70 80 90 100
DLLWRAQIVH RSYNPGYKVQ LASLLSVKTG GCSEDCAYCP QSVHNETTVQ
110 120 130 140 150
PNPVIEVESV LDRARAAKDA GADRFCMGWA WREIKDGNAF DSMLEMVKGV
160 170 180 190 200
RELGLEACVT AGMITDSQAS RLAEAGLTAY NHNLDTSPEH YSKIISTRTY
210 220 230 240 250
QDRLETLRRV RMAGITVCCG GIIGMGESVS DRASLLKVLA TLDPHPESVP
260 270 280 290 300
INALVAVEGT PMEDLSSIDP LEMVRMVATA RIIMPKSRIR LSAGRQQLGR
310 320 330 340
EAQILCLQSG ADSIFYGDTL LTTSNPEVEA DRKLLADAGI TANFS
Length:345
Mass (Da):37,938
Last modified:September 13, 2005 - v1
Checksum:i56DFC9866D9F87CC
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000095 Genomic DNA. Translation: AAZ58146.1.
RefSeqiWP_011294744.1. NC_007335.2.
YP_291849.1. NC_007335.2.

Genome annotation databases

EnsemblBacteriaiAAZ58146; AAZ58146; PMN2A_0655.
KEGGipmn:PMN2A_0655.
PATRICi23025035. VBIProMar14922_1453.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000095 Genomic DNA. Translation: AAZ58146.1.
RefSeqiWP_011294744.1. NC_007335.2.
YP_291849.1. NC_007335.2.

3D structure databases

ProteinModelPortaliQ46K32.
SMRiQ46K32. Positions 33-343.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAZ58146; AAZ58146; PMN2A_0655.
KEGGipmn:PMN2A_0655.
PATRICi23025035. VBIProMar14922_1453.

Phylogenomic databases

eggNOGiCOG0502.
HOGENOMiHOG000239957.
KOiK01012.
OMAiCGYCPQS.
OrthoDBiEOG622PMP.
PhylomeDBiQ46K32.

Enzyme and pathway databases

UniPathwayiUPA00078; UER00162.
BioCyciPMAR59920:GI1O-1473-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

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: NATL2A.

Entry informationi

Entry nameiBIOB_PROMT
AccessioniPrimary (citable) accession number: Q46K32
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 28, 2009
Last sequence update: September 13, 2005
Last modified: June 24, 2015
This is version 74 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.