Reviewed, UniProtKB/Swiss-Prot Q2KYL5 (LEU3_BORA1)

Names and origin

Protein names

Recommended name:
    3-isopropylmalate dehydrogenase
    EC=1.1.1.85
Alternative name(s):
    Beta-IPM dehydrogenase
      Short name=IMDH
    3-IPM-DH

Gene names

Name:	leuB
Ordered Locus Names:	BAV2268

Organism

Bordetella avium (strain 197N) [Complete proteome] [HAMAP]

Taxonomic identifier

360910 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Betaproteobacteria › Burkholderiales › Alcaligenaceae › Bordetella

Protein attributes

Sequence length	358 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Catalyzes the oxidation of 3-carboxy-2-hydroxy-4-methylpentanoate (3-isopropylmalate) to 3-carboxy-4-methyl-2-oxopentanoate. The product decarboxylates to 4-methyl-2 oxopentanoate By similarity.
Catalytic activity	(2R,3S)-3-isopropylmalate + NAD(+) = 4-methyl-2-oxopentanoate + CO(2) + NADH.
Cofactor	Binds 1 magnesium or manganese ion per subunit By similarity.
Pathway	Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine from 3-methyl-2-oxobutanoate: step 3/4.
Subunit structure	Homodimer By similarity.
Subcellular location	CytoplasmBy similarity.
Sequence similarities	Belongs to the isocitrate and isopropylmalate dehydrogenases family. LeuB type 1 subfamily.

Ontologies

Keywords
Biological process	Amino-acid biosynthesis Branched-chain amino acid biosynthesis Leucine biosynthesis
Cellular component	Cytoplasm
Ligand	Magnesium Manganese Metal-binding NAD
Molecular function	Oxidoreductase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	leucine biosynthetic process Inferred from electronic annotation. Source: HAMAP oxidation reduction Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	cytoplasm Inferred from electronic annotation. Source: HAMAP
Molecular function	3-isopropylmalate dehydrogenase activity Inferred from electronic annotation. Source: HAMAP magnesium ion binding Inferred from electronic annotation. Source: UniProtKB-KW manganese 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 – 358	358	3-isopropylmalate dehydrogenase		PRO_0000250102
Regions
	Nucleotide binding	282 – 294	13	NAD By similarity
Sites
	Metal binding	224	1	Magnesium or manganese By similarity
	Metal binding	248	1	Magnesium or manganese By similarity
	Metal binding	252	1	Magnesium or manganese By similarity
	Binding site	92	1	Substrate By similarity
	Binding site	102	1	Substrate By similarity
	Binding site	130	1	Substrate By similarity
	Binding site	224	1	Substrate By similarity
	Site	137	1	Important for catalysis By similarity
	Site	192	1	Important for catalysis By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q2KYL5-1 [UniParc]. Last modified March 7, 2006. Version 1. Checksum: E4572D228DAF8339	FASTA	358	38,511
	10 20 30 40 50 60 MTQKIAVLPG DGIGPEIVEQ AVRVLQALNL PLELQEAKVG GAAFDAFEHP LPPATLGLAK 70 80 90 100 110 120 SSHAVLFGAV GDWKYDSLPR EFRPEQAILG LRRALGLFAN LRPAILYPEL ASASSLKPEI 130 140 150 160 170 180 VAGLDIIIIR ELTGDIYFGT PRGVRSAPDG VFSGEREGYD TMRYAESEVR RIAHVGFETA 190 200 210 220 230 240 RKRNKKLCSV DKANVLETSQ FWRDIVIEVA REYPDVELSH MYVDNAAMQL VRNPRQFDVI 250 260 270 280 290 300 VTGNLFGDIL SDEAAMLTGS IGMLPSASLN ASGQGLYEPS HGSAPDIAGQ GIANPLATIL 310 320 330 340 350 SAAMLLRYSL NQPAQADRIE AAVRKVLAQG LRTADIHEAG TTKVSTSQMG DAVLKALA

References

[1]

"Comparison of the genome sequence of the poultry pathogen Bordetella avium with those of B. bronchiseptica, B. pertussis, and B. parapertussis reveals extensive diversity in surface structures associated with host interaction." Sebaihia M., Preston A., Maskell D.J., Kuzmiak H., Connell T.D., King N.D., Orndorff P.E., Miyamoto D.M., Thomson N.R., Harris D., Goble A., Lord A., Murphy L., Quail M.A., Rutter S., Squares R., Squares S., Woodward J., Parkhill J., Temple L.M. J. Bacteriol. 188:6002-6015(2006) [PubMed: 16885469] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	AM167904 Genomic DNA. Translation: CAJ49878.1.
RefSeq	YP_786782.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	6266667.
GenomeReviews	Gene locus BAV2268 in contig AM167904_GR.
KEGG	bav:BAV2268.
NMPDR	fig|521.1.peg.157.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	Q2KYL5.
Family and domain databases
HAMAP	MF_01033. [Tree]
InterPro	IPR004429. 3-isopropylmalate_DHase. IPR001804. IsoCit_IM_DHase. [Graphical view]
Gene3D	G3DSA:3.40.718.10. IDH_IMDH. 1 hit.
PANTHER	PTHR11835. IDH_IMDH_dimeric. 1 hit. PTHR11835:SF13. IPMDH. 1 hit.
Pfam	PF00180. Iso_dh. 1 hit. [Graphical view]
TIGRFAMs	TIGR00169. leuB. 1 hit.
PROSITE	PS00470. IDH_IMDH. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

LEU3_BORA1

Accession

Primary (citable) accession number: Q2KYL5

Entry history

Integrated into UniProtKB/Swiss-Prot:	September 19, 2006
Last sequence update:	March 7, 2006
Last modified:	November 4, 2008
This is version 25 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)