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Protein

3-methyl-2-oxobutanoate hydroxymethyltransferase

Gene

panB

Organism
Prochlorococcus marinus (strain NATL2A)
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)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi42 – 421MagnesiumUniRule annotation
Metal bindingi86 – 861MagnesiumUniRule annotation
Binding sitei86 – 861Alpha-ketoisovalerateUniRule annotation
Binding sitei116 – 1161Alpha-ketoisovalerateUniRule annotation
Metal bindingi118 – 1181MagnesiumUniRule annotation
Active sitei185 – 1851Proton 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

BioCyciPMAR59920:GI1O-1727-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:PMN2A_0876
OrganismiProchlorococcus marinus (strain NATL2A)
Taxonomic identifieri59920 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaProchloralesProchlorococcaceaeProchlorococcus
Proteomesi
  • UP000002535 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 – 2722723-methyl-2-oxobutanoate hydroxymethyltransferasePRO_0000297329Add
BLAST

Interactioni

Subunit structurei

Homodecamer; pentamer of dimers.UniRule annotation

Structurei

3D structure databases

ProteinModelPortaliQ46JG1.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni42 – 432Alpha-ketoisovalerate bindingUniRule annotation

Sequence similaritiesi

Belongs to the PanB family.UniRule annotation

Phylogenomic databases

HOGENOMiHOG000078427.
KOiK00606.
OMAiQMAYHTE.
OrthoDBiPOG091H02K8.
PhylomeDBiQ46JG1.

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.

Q46JG1-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MQTTELVRFK KLGKQISVLT AWDAISSSIV EAAGADVVLV GDSLGMVVLG
60 70 80 90 100
HSTTLPVTLD QMLHHTKAVC RGFCKPLSKQ PLVVCDLPFL SYQCGEDKAV
110 120 130 140 150
EAAGTLLKNS TASAVKLEGA EPETLLVIKR LIRMGIPVMG HLGLTPQSVH
160 170 180 190 200
QLGYKSQARD KDSQEKIFKD SKMLQESGCF AIVLEHIPGE IASRLKKHID
210 220 230 240 250
IPVIGIGAGN DCDGQVRVTA DILGLSIAQP PFAKPLLAGR ELCINALKEW
260 270
INSTDLDQVN PTTKTSESKS DC
Length:272
Mass (Da):29,237
Last modified:September 13, 2005 - v1
Checksum:iC2C19BA4A7F3383A
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000095 Genomic DNA. Translation: AAZ58367.1.
RefSeqiWP_011295224.1. NC_007335.2.

Genome annotation databases

EnsemblBacteriaiAAZ58367; AAZ58367; PMN2A_0876.
KEGGipmn:PMN2A_0876.
PATRICi23025543. VBIProMar14922_1701.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000095 Genomic DNA. Translation: AAZ58367.1.
RefSeqiWP_011295224.1. NC_007335.2.

3D structure databases

ProteinModelPortaliQ46JG1.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAZ58367; AAZ58367; PMN2A_0876.
KEGGipmn:PMN2A_0876.
PATRICi23025543. VBIProMar14922_1701.

Phylogenomic databases

HOGENOMiHOG000078427.
KOiK00606.
OMAiQMAYHTE.
OrthoDBiPOG091H02K8.
PhylomeDBiQ46JG1.

Enzyme and pathway databases

UniPathwayiUPA00028; UER00003.
BioCyciPMAR59920:GI1O-1727-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 nameiPANB_PROMT
AccessioniPrimary (citable) accession number: Q46JG1
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 24, 2007
Last sequence update: September 13, 2005
Last modified: September 7, 2016
This is version 72 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.