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Protein

3-methyl-2-oxobutanoate hydroxymethyltransferase

Gene

panB

Organism
Acidithiobacillus ferrooxidans (strain ATCC 23270 / DSM 14882 / CIP 104768 / NCIMB 8455) (Ferrobacillus ferrooxidans (strain ATCC 23270))
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 (panB)
  2. no protein annotated in this organism
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)DescriptionActionsGraphical viewLength
Metal bindingi44MagnesiumUniRule annotation1
Metal bindingi83MagnesiumUniRule annotation1
Binding sitei83Alpha-ketoisovalerateUniRule annotation1
Binding sitei112Alpha-ketoisovalerateUniRule annotation1
Metal bindingi114MagnesiumUniRule annotation1
Active sitei181Proton acceptorUniRule annotation1

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

UniPathwayiUPA00028; UER00003.

Names & Taxonomyi

Protein namesi
Recommended name:
3-methyl-2-oxobutanoate hydroxymethyltransferaseUniRule annotation (EC:2.1.2.11UniRule annotation)
Alternative name(s):
Ketopantoate hydroxymethyltransferaseUniRule annotation
Short name:
KPHMTUniRule annotation
Gene namesi
Name:panBUniRule annotation
Ordered Locus Names:AFE_1771
OrganismiAcidithiobacillus ferrooxidans (strain ATCC 23270 / DSM 14882 / CIP 104768 / NCIMB 8455) (Ferrobacillus ferrooxidans (strain ATCC 23270))
Taxonomic identifieri243159 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAcidithiobacilliaAcidithiobacillalesAcidithiobacillaceaeAcidithiobacillus
Proteomesi
  • UP000001362 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10001181131 – 2613-methyl-2-oxobutanoate hydroxymethyltransferaseAdd BLAST261

Proteomic databases

PaxDbiB7JBM8.

Interactioni

Subunit structurei

Homodecamer; pentamer of dimers.UniRule annotation

Protein-protein interaction databases

STRINGi243159.AFE_1771.

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni44 – 45Alpha-ketoisovalerate bindingUniRule annotation2

Sequence similaritiesi

Belongs to the PanB family.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105CCG. Bacteria.
COG0413. LUCA.
HOGENOMiHOG000078427.
KOiK00606.
OMAiRPQGKNI.
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.

B7JBM8-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MHKKIARWVQ DKKSGIKRAV VTAYDYPFAR LAAEAGVHGI LVGDSLGMVV
60 70 80 90 100
GGGSDTLGVT LEQMAYHTGM VVRGAGDCLV FADLPFGSYE KGPEQAWAAA
110 120 130 140 150
VTLLRAGADV VKLEGGAEMA STVAFCTERG INICAHIGLT PQRVRQWGSF
160 170 180 190 200
QRQGTDADSA RRLQADAGAL AEAGARFLVL EAVPDALAAN ITRDIAIPTI
210 220 230 240 250
GIGAGPDTDA QVLVIHDLLG LGTESPPFAR RYIEGGRIMR DALAEYVREV
260
GNSEFPPRRK R
Length:261
Mass (Da):27,743
Last modified:February 10, 2009 - v1
Checksum:iE6E871642D07AC9E
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP001219 Genomic DNA. Translation: ACK80864.1.
RefSeqiWP_009561698.1. NC_011761.1.

Genome annotation databases

EnsemblBacteriaiACK80864; ACK80864; AFE_1771.
KEGGiafr:AFE_1771.
PATRICi20654679. VBIAciFer29821_1611.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP001219 Genomic DNA. Translation: ACK80864.1.
RefSeqiWP_009561698.1. NC_011761.1.

3D structure databases

ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi243159.AFE_1771.

Proteomic databases

PaxDbiB7JBM8.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiACK80864; ACK80864; AFE_1771.
KEGGiafr:AFE_1771.
PATRICi20654679. VBIAciFer29821_1611.

Phylogenomic databases

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

Enzyme and pathway databases

UniPathwayiUPA00028; UER00003.

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 nameiPANB_ACIF2
AccessioniPrimary (citable) accession number: B7JBM8
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 14, 2009
Last sequence update: February 10, 2009
Last modified: November 2, 2016
This is version 58 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

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.