A9IRP2 (PANB_BART1) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
3-methyl-2-oxobutanoate hydroxymethyltransferase
EC=2.1.2.11

Alternative name(s):
Ketopantoate hydroxymethyltransferase
Short name=KPHMT

Gene names

Name:	panB
Ordered Locus Names:	BT_0790

Organism

Bartonella tribocorum (strain CIP 105476 / IBS 506) [Complete proteome] [HAMAP]

Taxonomic identifier

382640 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Alphaproteobacteria › Rhizobiales › Bartonellaceae › Bartonella

Protein attributes

Sequence length	271 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Catalyzes the reversible reaction in which hydroxymethyl group from 5,10-methylenetetrahydrofolate is tranferred onto alpha-ketoisovalerate to form ketopantoate By similarity. HAMAP MF_00156
Catalytic activity	5,10-methylenetetrahydrofolate + 3-methyl-2-oxobutanoate + H2O = tetrahydrofolate + 2-dehydropantoate. HAMAP MF_00156
Cofactor	Binds 1 magnesium ion per subunit By similarity. HAMAP MF_00156
Pathway	Cofactor biosynthesis; (R)-pantothenate biosynthesis; (R)-pantoate from 3-methyl-2-oxobutanoate: step 1/2. HAMAP MF_00156
Subunit structure	Homodecamer; pentamer of dimers By similarity. HAMAP MF_00156
Subcellular location	Cytoplasm Potential HAMAP MF_00156.
Sequence similarities	Belongs to the PanB family.

Ontologies

Keywords
Biological process	Pantothenate biosynthesis
Cellular component	Cytoplasm
Ligand	Magnesium Metal-binding
Molecular function	Methyltransferase Transferase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	pantothenate biosynthetic process Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	3-methyl-2-oxobutanoate hydroxymethyltransferase activity Inferred from electronic annotation. Source: EC metal ion binding Inferred from electronic annotation. Source: UniProtKB-KW methyltransferase activity Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 271	271	3-methyl-2-oxobutanoate hydroxymethyltransferase HAMAP MF_00156		PRO_1000076816
Regions
	Region	49 – 50	2	Alpha-ketoisovalerate binding By similarity
Sites
	Active site	187	1	Proton acceptor By similarity
	Metal binding	49	1	Magnesium By similarity
	Metal binding	88	1	Magnesium By similarity
	Metal binding	120	1	Magnesium By similarity
	Binding site	88	1	Alpha-ketoisovalerate By similarity
	Binding site	118	1	Alpha-ketoisovalerate By similarity

Sequences

	Sequence		Length	Mass (Da)
	A9IRP2 [UniParc]. Last modified February 5, 2008. Version 1. Checksum: E6ACDAF0D62DE642	FASTA	271	29,641
	10 20 30 40 50 60 MSVHKMVKRI TSSQIRARKG QQPIVSLTAY QAYTARIADP YCDILLVGDS VGMVVYGFET 70 80 90 100 110 120 TLPVNLDMMI LHGQAVVRGS QKALVVIDMP FGSYEESKEQ AFLNASRILA QTGCGAVKLE 130 140 150 160 170 180 GGVYMAETID FLCKRGIPVM GHIGLTPQAV NRFGGFNTQG RKESDWQRIE DDAVVIENAG 190 200 210 220 230 240 AFAIVLEGIV EPLAVKLTEK LSIPTIGIGA SNQCDGQVLV MEDMLGYGAH VPKFVRRYGD 250 260 270 LEQAMETAIK NYAEDVTSRA FPAEKEVYKL K

References

[1]

"Genomic analysis of Bartonella identifies type IV secretion systems as host adaptability factors." Saenz H.L., Engel P., Stoeckli M.C., Lanz C., Raddatz G., Vayssier-Taussat M., Birtles R., Schuster S.C., Dehio C. Nat. Genet. 39:1469-1476(2007) [PubMed: 18037886] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: CIP 105476 / IBS 506.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AM260525 Genomic DNA. Translation: CAK01205.1.
RefSeq	YP_001609200.1. NC_010161.1.
3D structure databases
ProteinModelPortal	A9IRP2.
ModBase	Search...
Protein-protein interaction databases
STRING	A9IRP2.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	5829445.
GenomeReviews	Gene locus BT_0790 in contig AM260525_GR.
PATRIC	20549338. VBIBarTri113218_0827.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	HBG299908.
OMA	MAHVGLM.
ProtClustDB	PRK00311.
Enzyme and pathway databases
BioCyc	BTRI382640:BT_0790-MONOMER.
Family and domain databases
HAMAP	MF_00156. PanB. [Tree]
InterPro	IPR003700. Pantoate_hydroxy_MeTrfase. IPR015813. Pyrv/PenolPyrv_Kinase. [Graphical view]
Gene3D	G3DSA:3.20.20.60. Pyrv/PenolPyrv_Kinase_cat. 1 hit.
PANTHER	PTHR20881. Pantoate_transf. 1 hit.
Pfam	PF02548. Pantoate_transf. 1 hit. [Graphical view]
PIRSF	PIRSF000388. Pantoate_hydroxy_MeTrfase. 1 hit.
SUPFAM	SSF51621. Pyrv/PenolPyrv_Kinase_cat. 1 hit.
TIGRFAMs	TIGR00222. PanB. 1 hit.
ProtoNet	Search...

Entry information

Entry name

PANB_BART1

Accession

Primary (citable) accession number: A9IRP2

Entry history

Integrated into UniProtKB/Swiss-Prot:	May 20, 2008
Last sequence update:	February 5, 2008
Last modified:	January 25, 2012
This is version 30 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program