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Protein

3-methyl-2-oxobutanoate hydroxymethyltransferase

Gene

panB

Organism
Mycobacterium sp. (strain MCS)
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 bindingi63 – 631MagnesiumUniRule annotation
Metal bindingi102 – 1021MagnesiumUniRule annotation
Binding sitei102 – 1021Alpha-ketoisovalerateUniRule annotation
Binding sitei132 – 1321Alpha-ketoisovalerateUniRule annotation
Metal bindingi134 – 1341MagnesiumUniRule annotation
Active sitei200 – 2001Proton 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

BioCyciMSP164756:GHQ8-3360-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:Mmcs_3332
OrganismiMycobacterium sp. (strain MCS)
Taxonomic identifieri164756 [NCBI]
Taxonomic lineageiBacteriaActinobacteriaCorynebacterialesMycobacteriaceaeMycobacterium

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 – 2822823-methyl-2-oxobutanoate hydroxymethyltransferasePRO_0000297302Add
BLAST

Interactioni

Subunit structurei

Homodecamer; pentamer of dimers.UniRule annotation

Structurei

3D structure databases

ProteinModelPortaliQ1B6P5.
SMRiQ1B6P5. Positions 19-280.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni63 – 642Alpha-ketoisovalerate bindingUniRule annotation

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.

Q1B6P5-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSEQTVYGAA SDQPTPKPRV KVRTTHLQKW KAEGHKWAML TAYDFSTARA
60 70 80 90 100
FDDAGIPVLL VGDSAANVVY GYDTTVPITI DELIPLVRGV VRGAPHALVV
110 120 130 140 150
ADLPFGSYEE GPRQALATAT RFLKETGAHA VKLEGGERVA EQIATLSAAG
160 170 180 190 200
IPVMAHIGFT PQSVNGLGGF KVQGRGDAAE QTIHDAIAVQ EAGAFSVVME
210 220 230 240 250
MVPAELATQI TGKLTIPTVG IGAGPNCDAQ VLVWQDMAGL TSGRTAKFVK
260 270 280
RFGDVGAELR RAASQYADEV AAGVFPAEEH SF
Length:282
Mass (Da):29,727
Last modified:July 11, 2006 - v1
Checksum:i77F5C70DE05DF5FD
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000384 Genomic DNA. Translation: ABG09439.1.
RefSeqiWP_011560715.1. NC_008146.1.

Genome annotation databases

EnsemblBacteriaiABG09439; ABG09439; Mmcs_3332.
KEGGimmc:Mmcs_3332.
PATRICi18116947. VBIMycSp106721_3416.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000384 Genomic DNA. Translation: ABG09439.1.
RefSeqiWP_011560715.1. NC_008146.1.

3D structure databases

ProteinModelPortaliQ1B6P5.
SMRiQ1B6P5. Positions 19-280.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABG09439; ABG09439; Mmcs_3332.
KEGGimmc:Mmcs_3332.
PATRICi18116947. VBIMycSp106721_3416.

Phylogenomic databases

HOGENOMiHOG000078427.
KOiK00606.
OMAiDMLGFFD.

Enzyme and pathway databases

UniPathwayiUPA00028; UER00003.
BioCyciMSP164756:GHQ8-3360-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_MYCSS
AccessioniPrimary (citable) accession number: Q1B6P5
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 24, 2007
Last sequence update: July 11, 2006
Last modified: September 7, 2016
This is version 73 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.