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Protein

3-methyl-2-oxobutanoate hydroxymethyltransferase

Gene

panB

Organism
Escherichia coli O157:H7
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

Pathway: (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. 2-dehydropantoate 2-reductase (panE)
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 bindingi45 – 451MagnesiumUniRule annotation
Metal bindingi84 – 841MagnesiumUniRule annotation
Binding sitei84 – 841Alpha-ketoisovalerateUniRule annotation
Binding sitei112 – 1121Alpha-ketoisovalerateUniRule annotation
Metal bindingi114 – 1141MagnesiumUniRule annotation
Active sitei181 – 1811Proton 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

BioCyciECOL386585:GJFA-135-MONOMER.
ECOO157:PANB-MONOMER.
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:Z0145, ECs0138
OrganismiEscherichia coli O157:H7
Taxonomic identifieri83334 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacterialesEnterobacteriaceaeEscherichia
ProteomesiUP000002519 Componenti: Chromosome

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 – 2642643-methyl-2-oxobutanoate hydroxymethyltransferasePRO_0000184843Add
BLAST

Interactioni

Subunit structurei

Homodecamer; pentamer of dimers.UniRule annotation

Protein-protein interaction databases

STRINGi155864.Z0145.

Structurei

3D structure databases

ProteinModelPortaliQ8X929.
SMRiQ8X929. Positions 3-264.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni45 – 462Alpha-ketoisovalerate bindingUniRule annotation

Sequence similaritiesi

Belongs to the PanB family.UniRule annotation

Phylogenomic databases

eggNOGiCOG0413.
HOGENOMiHOG000078427.
KOiK00606.
OMAiAIKQYAD.
OrthoDBiEOG63C0WN.

Family and domain databases

Gene3Di3.20.20.60. 1 hit.
HAMAPiMF_00156. PanB.
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.

Q8X929-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKPTTIASLQ KCKQEKKRFA TITAYDYSFA KLFAEEGLNV MLVGDSLGMT
60 70 80 90 100
VQGHESTLPV TVEDIAYHTT AVRRGAPNCL LLADLPFMAY ATPEQAFENA
110 120 130 140 150
ATVMRAGANM VKIEGGEWLV ETVKMLTERA VPVCGHLGLT PQSVNIFGGY
160 170 180 190 200
KVQGRGDEAS DRLLSDALAL EAAGAQLLVL ECVPVELAKR ITEALAIPVI
210 220 230 240 250
GIGAGNVTDG QILVMHDAFG ITGGHIPKFA KNFLAETGDI RAAVRQYMAE
260
VESGVYPGEE HSFH
Length:264
Mass (Da):28,310
Last modified:March 1, 2002 - v1
Checksum:iD93FF23EBEF8D090
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE005174 Genomic DNA. Translation: AAG54438.1.
BA000007 Genomic DNA. Translation: BAB33561.1.
PIRiB85497.
B90646.
RefSeqiNP_308165.1. NC_002695.1.

Genome annotation databases

EnsemblBacteriaiAAG54438; AAG54438; Z0145.
BAB33561; BAB33561; BAB33561.
GeneIDi913736.
KEGGiece:Z0145.
ecs:ECs0138.
PATRICi18349218. VBIEscCol44059_0139.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE005174 Genomic DNA. Translation: AAG54438.1.
BA000007 Genomic DNA. Translation: BAB33561.1.
PIRiB85497.
B90646.
RefSeqiNP_308165.1. NC_002695.1.

3D structure databases

ProteinModelPortaliQ8X929.
SMRiQ8X929. Positions 3-264.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi155864.Z0145.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAG54438; AAG54438; Z0145.
BAB33561; BAB33561; BAB33561.
GeneIDi913736.
KEGGiece:Z0145.
ecs:ECs0138.
PATRICi18349218. VBIEscCol44059_0139.

Phylogenomic databases

eggNOGiCOG0413.
HOGENOMiHOG000078427.
KOiK00606.
OMAiAIKQYAD.
OrthoDBiEOG63C0WN.

Enzyme and pathway databases

UniPathwayiUPA00028; UER00003.
BioCyciECOL386585:GJFA-135-MONOMER.
ECOO157:PANB-MONOMER.

Family and domain databases

Gene3Di3.20.20.60. 1 hit.
HAMAPiMF_00156. PanB.
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...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: O157:H7 / EDL933 / ATCC 700927 / EHEC.
  2. "Complete genome sequence of enterohemorrhagic Escherichia coli O157:H7 and genomic comparison with a laboratory strain K-12."
    Hayashi T., Makino K., Ohnishi M., Kurokawa K., Ishii K., Yokoyama K., Han C.-G., Ohtsubo E., Nakayama K., Murata T., Tanaka M., Tobe T., Iida T., Takami H., Honda T., Sasakawa C., Ogasawara N., Yasunaga T.
    , Kuhara S., Shiba T., Hattori M., Shinagawa H.
    DNA Res. 8:11-22(2001) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: O157:H7 / Sakai / RIMD 0509952 / EHEC.

Entry informationi

Entry nameiPANB_ECO57
AccessioniPrimary (citable) accession number: Q8X929
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 30, 2002
Last sequence update: March 1, 2002
Last modified: June 24, 2015
This is version 88 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

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.