Reviewed, UniProtKB/Swiss-Prot A1US40 (PANB_BARBK)

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:	BARBAKC583_0477

Organism

Bartonella bacilliformis (strain ATCC 35685 / KC583) [Complete proteome] [HAMAP]

Taxonomic identifier

360095 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Alphaproteobacteria › Rhizobiales › Bartonellaceae › Bartonella

Protein attributes

Sequence length	271 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
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.
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.
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.
Subcellular location	Cytoplasm Potential.
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: HAMAP
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	3-methyl-2-oxobutanoate hydroxymethyltransferase activity Inferred from electronic annotation. Source: HAMAP magnesium ion binding 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_0000297223
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)
	A1US40-1 [UniParc]. Last modified February 6, 2007. Version 1. Checksum: 8959EE2FC25A1CE7	FASTA	271	29,423
	10 20 30 40 50 60 MSVHKSIKRI TASEIQAKKK QEPIVSLTAY QAYSARIADP HCDFLLVGDS VGMIVHGFDT 70 80 90 100 110 120 TLPVDVDMMI LHGKAVMRGS QRALVVVDMP FGSYEKSPEQ AFSNASRILA DTGCGAVKLE 130 140 150 160 170 180 GGIHMAKTID FLCKRGIPVM SHIGLTPQAV NHFGGFKTQG RDKSDWEKIE ADAAAIEDAG 190 200 210 220 230 240 AFAVVVEAVV EPLAVKLTEK LSIPTIGIGA SNQCDGQILV MEDMLGYGAW APKFVRRYGT 250 260 270 LEQAMDTAIR NYAEDVKSRA FPSDSEIYKL K

References

[1]

Hendrix L., Mohamoud Y., Radune D., Shvartsbeyn A., Daugherty S., Dodson R., Durkin A.S., Harkins D., Huot H., Kothari S.P., Madupu R., Li J., Nelson W.C., Shrivastava S., Giglio M.G., Haft D., Selengut J., Fraser-Ligget C., Seshadri R. Submitted (DEC-2006) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	CP000524 Genomic DNA. Translation: ABM44890.1.
RefSeq	YP_988793.1.
3D structure databases
ModBase	Search...
Protein-protein interaction databases
STRING	A1US40.
Genome annotation databases
GeneID	4684397.
GenomeReviews	Gene locus BARBAKC583_0477 in contig CP000524_GR.
KEGG	bbk:BARBAKC583_0477.
NMPDR	fig|360095.3.peg.170.
TIGR	BARBAKC583_0477.
Phylogenomic databases
OMA	LVVVDMP.
Family and domain databases
HAMAP	MF_00156. [Tree]
InterPro	IPR003700. Pantoate_hydroxy_MeTrfase. IPR015813. Pyrv/PenolPyrv_Kinase_cat. [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.
TIGRFAMs	TIGR00222. panB. 1 hit.
ProtoNet	Search...

Entry information

Entry name

PANB_BARBK

Accession

Primary (citable) accession number: A1US40

Entry history

Integrated into UniProtKB/Swiss-Prot:	July 24, 2007
Last sequence update:	February 6, 2007
Last modified:	November 3, 2009
This is version 23 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)