Reviewed, UniProtKB/Swiss-Prot Q7NUC2 (LEU3_CHRVO)

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:	CV_2778

Organism

Chromobacterium violaceum [Complete proteome] [HAMAP]

Taxonomic identifier

536 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Betaproteobacteria › Neisseriales › Neisseriaceae › Chromobacterium

Protein attributes

Sequence length	354 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.
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 – 354	354	3-isopropylmalate dehydrogenase		PRO_0000083679
Regions
	Nucleotide binding	73 – 86	14	NAD By similarity
	Nucleotide binding	279 – 291	13	NAD By similarity
Sites
	Metal binding	221	1	Magnesium or manganese By similarity
	Metal binding	245	1	Magnesium or manganese By similarity
	Metal binding	249	1	Magnesium or manganese By similarity
	Binding site	93	1	Substrate By similarity
	Binding site	103	1	Substrate By similarity
	Binding site	131	1	Substrate By similarity
	Binding site	221	1	Substrate By similarity
	Site	138	1	Important for catalysis By similarity
	Site	189	1	Important for catalysis By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q7NUC2-1 [UniParc]. Last modified December 15, 2003. Version 1. Checksum: 3DA41DB62D0E15B6	FASTA	354	38,544
	10 20 30 40 50 60 MKIAILPGDG IGPEIIAQAE RVLEVLRRDG LKIETEHAPL GGAAYDQYGV PYPEATQKLA 70 80 90 100 110 120 READAVLLGA VGGPAYDKLD RPLRPERGLL AIRKDLNLFA NLRPAILYPE LANASTLKPE 130 140 150 160 170 180 VVAGLDIMIV RELTGDIYFG QPRGIAVNEL GEREAYNTMR YSESEVRRIA HVAFGIAMKR 190 200 210 220 230 240 NRKLCSVDKA NVLETTEFWK EIMIEVAKEY PQVELSHMYV DNAAMQLVRN PKQFDVMVTG 250 260 270 280 290 300 NIFGDILSDE ASMLTGSIGM LPSASLDQNN KGLYEPSHGS APDIAGQNLA NPLATILSAA 310 320 330 340 350 MMLRYSFGQE AAARRVEDAV KKVLAQGYRT ADIYEAGCEK VSCSGMGDAV VAAM

References

[1]

"The complete genome sequence of Chromobacterium violaceum reveals remarkable and exploitable bacterial adaptability." Vasconcelos A.T.R., de Almeida D.F., Hungria M., Guimaraes C.T., Antonio R.V., Almeida F.C., de Almeida L.G.P., de Almeida R., Alves-Gomes J.A., Andrade E.M., Araripe J., de Araujo M.F.F., Astolfi-Filho S., Azevedo V., Baptista A.J., Bataus L.A.M., Batista J.S., Belo A. , van den Berg C., Bogo M., Bonatto S., Bordignon J., Brigido M.M., Brito C.A., Brocchi M., Burity H.A., Camargo A.A., Cardoso D.D.P., Carneiro N.P., Carraro D.M., Carvalho C.M.B., Cascardo J.C.M., Cavada B.S., Chueire L.M.O., Creczynski-Pasa T.B., Cunha-Junior N.C., Fagundes N., Falcao C.L., Fantinatti F., Farias I.P., Felipe M.S.S., Ferrari L.P., Ferro J.A., Ferro M.I.T., Franco G.R., Freitas N.S.A., Furlan L.R., Gazzinelli R.T., Gomes E.A., Goncalves P.R., Grangeiro T.B., Grattapaglia D., Grisard E.C., Hanna E.S., Jardim S.N., Laurino J., Leoi L.C.T., Lima L.F.A., Loureiro M.F., Lyra M.C.C.P., Madeira H.M.F., Manfio G.P., Maranhao A.Q., Martins W.S., di Mauro S.M.Z., de Medeiros S.R.B., Meissner R.V., Moreira M.A.M., Nascimento F.F., Nicolas M.F., Oliveira J.G., Oliveira S.C., Paixao R.F.C., Parente J.A., Pedrosa F.O., Pena S.D.J., Pereira J.O., Pereira M., Pinto L.S.R.C., Pinto L.S., Porto J.I.R., Potrich D.P., Ramalho-Neto C.E., Reis A.M.M., Rigo L.U., Rondinelli E., Santos E.B.P., Santos F.R., Schneider M.P.C., Seuanez H.N., Silva A.M.R., da Silva A.L.C., Silva D.W., Silva R., Simoes I.C., Simon D., Soares C.M.A., Soares R.B.A., Souza E.M., Souza K.R.L., Souza R.C., Steffens M.B.R., Steindel M., Teixeira S.R., Urmenyi T., Vettore A., Wassem R., Zaha A., Simpson A.J.G. Proc. Natl. Acad. Sci. U.S.A. 100:11660-11665(2003) [PubMed: 14500782] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 12472 / DSM 30191 / IFO 12614 / JCM 1249 / NCIB 9131.

Cross-references

Sequence databases
EMBLGenBankDDBJ	AE016825 Genomic DNA. Translation: AAQ60446.1.
RefSeq	NP_902448.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	2547144.
GenomeReviews	Gene locus CV_2778 in contig AE016825_GR.
KEGG	cvi:CV_2778.
NMPDR	fig|243365.1.peg.2778.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	Q7NUC2.
Enzyme and pathway databases
BioCyc	CVIO243365:CV_2778-MON.
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_CHRVO

Accession

Primary (citable) accession number: Q7NUC2

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 15, 2003
Last sequence update:	December 15, 2003
Last modified:	November 4, 2008
This is version 44 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)