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Protein

3-methyl-2-oxobutanoate hydroxymethyltransferase

Gene

panB

Organism
Acinetobacter baumannii (strain AB307-0294)
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 bindingi43MagnesiumUniRule annotation1
Metal bindingi82MagnesiumUniRule annotation1
Binding sitei82Alpha-ketoisovalerateUniRule annotation1
Binding sitei110Alpha-ketoisovalerateUniRule annotation1
Metal bindingi112MagnesiumUniRule annotation1
Active sitei179Proton 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:ABBFA_002975
OrganismiAcinetobacter baumannii (strain AB307-0294)
Taxonomic identifieri557600 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaPseudomonadalesMoraxellaceaeAcinetobacterAcinetobacter calcoaceticus/baumannii complex

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_10001181111 – 2693-methyl-2-oxobutanoate hydroxymethyltransferaseAdd BLAST269

Interactioni

Subunit structurei

Homodecamer; pentamer of dimers.UniRule annotation

Structurei

3D structure databases

ProteinModelPortaliB7H011.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni43 – 44Alpha-ketoisovalerate bindingUniRule annotation2

Sequence similaritiesi

Belongs to the PanB family.UniRule annotation

Phylogenomic databases

HOGENOMiHOG000078427.
KOiK00606.
OMAiDMLGFFD.

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.

B7H011-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MISLSDLRKF KAEGRKFSCL TCYDASMAKA MELAEIDTIL IGDSLGMAIQ
60 70 80 90 100
GRDSTLPVTV EDMAYHTAAV RRGNQHALIM TDLPFMSYAT LNDALQNAKT
110 120 130 140 150
VMQAGAQMIK IEGGAWLSET VQVLTRNGVP VCVHLGLTPQ SVHVFGGYKL
160 170 180 190 200
QARTREAADQ LIADCTAVVE AGAAVLLLEC VPAQLGQEIA ELFPNTPVIG
210 220 230 240 250
IGAGNATDGQ VLVVQDMLGL TFGRVARFVR NFMKEQSGET AILDAFKAFH
260
AAVQDQSFPA KEHTFQVEL
Length:269
Mass (Da):28,976
Last modified:February 10, 2009 - v1
Checksum:iA92CEDA056752238
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP001172 Genomic DNA. Translation: ACJ59132.1.
RefSeqiWP_000624763.1. NC_011595.1.

Genome annotation databases

EnsemblBacteriaiACJ59132; ACJ59132; ABBFA_002975.
KEGGiabb:ABBFA_002975.
PATRICi20707420. VBIAciBau42682_2874.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP001172 Genomic DNA. Translation: ACJ59132.1.
RefSeqiWP_000624763.1. NC_011595.1.

3D structure databases

ProteinModelPortaliB7H011.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiACJ59132; ACJ59132; ABBFA_002975.
KEGGiabb:ABBFA_002975.
PATRICi20707420. VBIAciBau42682_2874.

Phylogenomic databases

HOGENOMiHOG000078427.
KOiK00606.
OMAiDMLGFFD.

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_ACIB3
AccessioniPrimary (citable) accession number: B7H011
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 14, 2009
Last sequence update: February 10, 2009
Last modified: November 2, 2016
This is version 57 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

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.