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Protein

Biotin synthase

Gene

bioB

Organism
Chlorobium phaeobacteroides (strain DSM 266)
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:ibiotin 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 bindingi73 – 731Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi77 – 771Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi80 – 801Iron-sulfur 1 (4Fe-4S-S-AdoMet)UniRule annotation
Metal bindingi152 – 1521Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi213 – 2131Iron-sulfur 2 (2Fe-2S)UniRule annotation
Metal bindingi283 – 2831Iron-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

BioCyciCPHA290317:GHX4-113-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:Cpha266_0112
OrganismiChlorobium phaeobacteroides (strain DSM 266)
Taxonomic identifieri290317 [NCBI]
Taxonomic lineageiBacteriaChlorobiChlorobiaChlorobialesChlorobiaceaeChlorobium/Pelodictyon groupChlorobium
ProteomesiUP000008701 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 334334Biotin synthasePRO_0000381302Add
BLAST

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi290317.Cpha266_0112.

Structurei

3D structure databases

ProteinModelPortaliA1BCQ5.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

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

Phylogenomic databases

eggNOGiCOG0502.
HOGENOMiHOG000239958.
KOiK01012.
OrthoDBiEOG622PMP.

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.

A1BCQ5-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MRPVPLHPDI LQAYAVLETG EPVCRELAFA LGELHGPDVL DLASLAHKVK
60 70 80 90 100
LRHGGSSGSI HACSIMNARS GVCSENCRFC AQSAHHQAAI DVYGLVDVDA
110 120 130 140 150
VLFHARQTAS EGISHFGIVT SGFGYKTLSK EFRQILAMID RLHQELPDLE
160 170 180 190 200
ICASLGVLGE EPALELARHG IAQYNINIQV APRRYGELIA DTHSVDDRID
210 220 230 240 250
TIKRLRRNNI DVCCGGIIGV GEQMKERVEM IFAFADLDVS VIPLNILVPI
260 270 280 290 300
DGTPLEGSPG IPLDDIVKTF ALCRLVHPRK IIKIAAGRET VMKDFQGLLM
310 320 330
LSGADGLLTG GYLTTRGRAT ADDRMFMRQL QWFN
Length:334
Mass (Da):36,542
Last modified:July 28, 2009 - v2
Checksum:iB1C4E3962289DE59
GO

Sequence cautioni

The sequence ABL64182.1 differs from that shown. Reason: Erroneous initiation. Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000492 Genomic DNA. Translation: ABL64182.1. Different initiation.
RefSeqiWP_041467449.1. NC_008639.1.

Genome annotation databases

EnsemblBacteriaiABL64182; ABL64182; Cpha266_0112.
KEGGicph:Cpha266_0112.
PATRICi21387882. VBIChlPha122104_0137.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000492 Genomic DNA. Translation: ABL64182.1. Different initiation.
RefSeqiWP_041467449.1. NC_008639.1.

3D structure databases

ProteinModelPortaliA1BCQ5.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi290317.Cpha266_0112.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABL64182; ABL64182; Cpha266_0112.
KEGGicph:Cpha266_0112.
PATRICi21387882. VBIChlPha122104_0137.

Phylogenomic databases

eggNOGiCOG0502.
HOGENOMiHOG000239958.
KOiK01012.
OrthoDBiEOG622PMP.

Enzyme and pathway databases

UniPathwayiUPA00078; UER00162.
BioCyciCPHA290317:GHX4-113-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. "Complete sequence of Chlorobium phaeobacteroides DSM 266."
    US DOE Joint Genome Institute
    Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina del Rio T., Hammon N., Israni S., Pitluck S., Goltsman E., Schmutz J., Larimer F., Land M., Hauser L., Mikhailova N., Li T., Overmann J., Bryant D.A., Richardson P.
    Submitted (DEC-2006) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: DSM 266.

Entry informationi

Entry nameiBIOB_CHLPD
AccessioniPrimary (citable) accession number: A1BCQ5
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 28, 2009
Last sequence update: July 28, 2009
Last modified: July 22, 2015
This is version 59 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.