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Protein

3-methyl-2-oxobutanoate hydroxymethyltransferase 2

Gene

panB2

Organism
Burkholderia ambifaria (strain ATCC BAA-244 / AMMD) (Burkholderia cepacia (strain AMMD))
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Catalyzes the reversible reaction in which hydroxymethyl group from 5,10-methylenetetrahydrofolate is tranferred onto alpha-ketoisovalerate to form ketopantoate.UniRule annotation

Catalytic activityi

5,10-methylenetetrahydrofolate + 3-methyl-2-oxobutanoate + H2O = tetrahydrofolate + 2-dehydropantoate.UniRule annotation

Cofactori

Mg2+UniRule annotationNote: Binds 1 Mg2+ ion per subunit.UniRule annotation

Pathwayi: (R)-pantothenate biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes (R)-pantoate from 3-methyl-2-oxobutanoate.UniRule annotation
Proteins known to be involved in the 2 steps of the subpathway in this organism are:
  1. 3-methyl-2-oxobutanoate hydroxymethyltransferase 2 (panB2), 3-methyl-2-oxobutanoate hydroxymethyltransferase 1 (panB1)
  2. 2-dehydropantoate 2-reductase (Bamb_6421), 2-dehydropantoate 2-reductase (Bamb_6528), 2-dehydropantoate 2-reductase (Bamb_5729), 2-dehydropantoate 2-reductase (Bamb_2629), 2-dehydropantoate 2-reductase (Bamb_4203)
This subpathway is part of the pathway (R)-pantothenate 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 (R)-pantoate from 3-methyl-2-oxobutanoate, the pathway (R)-pantothenate biosynthesis and in Cofactor biosynthesis.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi49 – 491MagnesiumUniRule annotation
Metal bindingi88 – 881MagnesiumUniRule annotation
Binding sitei88 – 881Alpha-ketoisovalerateUniRule annotation
Binding sitei118 – 1181Alpha-ketoisovalerateUniRule annotation
Metal bindingi120 – 1201MagnesiumUniRule annotation
Active sitei187 – 1871Proton acceptorUniRule annotation

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Transferase

Keywords - Biological processi

Pantothenate biosynthesis

Keywords - Ligandi

Magnesium, Metal-binding

Enzyme and pathway databases

BioCyciBAMB339670:GH48-5306-MONOMER.
UniPathwayiUPA00028; UER00003.

Names & Taxonomyi

Protein namesi
Recommended name:
3-methyl-2-oxobutanoate hydroxymethyltransferase 2UniRule annotation (EC:2.1.2.11UniRule annotation)
Alternative name(s):
Ketopantoate hydroxymethyltransferase 2UniRule annotation
Short name:
KPHMT 2UniRule annotation
Gene namesi
Name:panB2UniRule annotation
Ordered Locus Names:Bamb_5229
OrganismiBurkholderia ambifaria (strain ATCC BAA-244 / AMMD) (Burkholderia cepacia (strain AMMD))
Taxonomic identifieri339670 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaBetaproteobacteriaBurkholderialesBurkholderiaceaeBurkholderiaBurkholderia cepacia complex
Proteomesi
  • UP000000662 Componenti: Chromosome 2

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 2842843-methyl-2-oxobutanoate hydroxymethyltransferase 2PRO_0000297232Add
BLAST

Interactioni

Subunit structurei

Homodecamer; pentamer of dimers.UniRule annotation

Protein-protein interaction databases

STRINGi339670.Bamb_5229.

Structurei

3D structure databases

ProteinModelPortaliQ0B4Z6.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni49 – 502Alpha-ketoisovalerate bindingUniRule annotation

Sequence similaritiesi

Belongs to the PanB family.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105CCG. Bacteria.
COG0413. LUCA.
HOGENOMiHOG000078427.
KOiK00606.
OMAiTEDMIGA.
OrthoDBiPOG091H02K8.

Family and domain databases

CDDicd06557. KPHMT-like. 1 hit.
Gene3Di3.20.20.60. 1 hit.
HAMAPiMF_00156. PanB. 1 hit.
InterProiIPR003700. Pantoate_hydroxy_MeTrfase.
IPR015813. Pyrv/PenolPyrv_Kinase-like_dom.
[Graphical view]
PANTHERiPTHR20881. PTHR20881. 1 hit.
PfamiPF02548. Pantoate_transf. 1 hit.
[Graphical view]
PIRSFiPIRSF000388. Pantoate_hydroxy_MeTrfase. 1 hit.
SUPFAMiSSF51621. SSF51621. 1 hit.
TIGRFAMsiTIGR00222. panB. 1 hit.

Sequencei

Sequence statusi: Complete.

Q0B4Z6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSAHTRITRK TVTAIRSTKG IGSLVSLTAY SAPMAKLVHD VADVIIVGDS
60 70 80 90 100
VGMVLYGMPD TLRVTLDMMI AHGAAVVRGA AQACVVVDLP FSTFQESPAQ
110 120 130 140 150
AYRSAARLLA ETGAQAVKLE GGCEMTDTIR FLTERGIPVM AHVGLMPQQA
160 170 180 190 200
NAAGGFRAQG MDPLSAAQVF DAACAAERAG AFSVVIEGTA EALARHLTGT
210 220 230 240 250
LTIPTIGIGA SPACDGQVLV TEDMIGAFDA YTPRFVKRYA DANAVMRDAI
260 270 280
RQYAHDVRHR VFPEPAHCFG YGKPLQLADA GATV
Length:284
Mass (Da):29,849
Last modified:October 17, 2006 - v1
Checksum:i042652B4D6D3BF68
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000441 Genomic DNA. Translation: ABI90777.1.
RefSeqiWP_011660156.1. NZ_CP009799.1.

Genome annotation databases

EnsemblBacteriaiABI90777; ABI90777; Bamb_5229.
KEGGibam:Bamb_5229.
PATRICi19026451. VBIBurAmb61564_5476.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000441 Genomic DNA. Translation: ABI90777.1.
RefSeqiWP_011660156.1. NZ_CP009799.1.

3D structure databases

ProteinModelPortaliQ0B4Z6.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi339670.Bamb_5229.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABI90777; ABI90777; Bamb_5229.
KEGGibam:Bamb_5229.
PATRICi19026451. VBIBurAmb61564_5476.

Phylogenomic databases

eggNOGiENOG4105CCG. Bacteria.
COG0413. LUCA.
HOGENOMiHOG000078427.
KOiK00606.
OMAiTEDMIGA.
OrthoDBiPOG091H02K8.

Enzyme and pathway databases

UniPathwayiUPA00028; UER00003.
BioCyciBAMB339670:GH48-5306-MONOMER.

Family and domain databases

CDDicd06557. KPHMT-like. 1 hit.
Gene3Di3.20.20.60. 1 hit.
HAMAPiMF_00156. PanB. 1 hit.
InterProiIPR003700. Pantoate_hydroxy_MeTrfase.
IPR015813. Pyrv/PenolPyrv_Kinase-like_dom.
[Graphical view]
PANTHERiPTHR20881. PTHR20881. 1 hit.
PfamiPF02548. Pantoate_transf. 1 hit.
[Graphical view]
PIRSFiPIRSF000388. Pantoate_hydroxy_MeTrfase. 1 hit.
SUPFAMiSSF51621. SSF51621. 1 hit.
TIGRFAMsiTIGR00222. panB. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiPANB2_BURCM
AccessioniPrimary (citable) accession number: Q0B4Z6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 24, 2007
Last sequence update: October 17, 2006
Last modified: September 7, 2016
This is version 70 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

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.