ID   LEU3_KLULA              Reviewed;         362 AA.
AC   P23390;
DT   01-NOV-1991, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1993, sequence version 2.
DT   03-AUG-2022, entry version 134.
DE   RecName: Full=3-isopropylmalate dehydrogenase;
DE            Short=3-IPM-DH;
DE            Short=IMDH;
DE            EC=1.1.1.85;
DE   AltName: Full=Beta-IPM dehydrogenase;
GN   Name=LEU2; OrderedLocusNames=KLLA0D04906g;
OS   Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 /
OS   NRRL Y-1140 / WM37) (Yeast) (Candida sphaerica).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC   Saccharomycetales; Saccharomycetaceae; Kluyveromyces.
OX   NCBI_TaxID=284590;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=ATCC 76492 / CBS 2359/152 / CLIB 210;
RX   PubMed=1441757; DOI=10.1002/yea.320080914;
RA   Zhang Y.-P., Chen X.J., Li Y.Y., Fukuhara H.;
RT   "LEU2 gene homolog in Kluyveromyces lactis.";
RL   Yeast 8:801-804(1992).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37;
RX   PubMed=15229592; DOI=10.1038/nature02579;
RA   Dujon B., Sherman D., Fischer G., Durrens P., Casaregola S., Lafontaine I.,
RA   de Montigny J., Marck C., Neuveglise C., Talla E., Goffard N., Frangeul L.,
RA   Aigle M., Anthouard V., Babour A., Barbe V., Barnay S., Blanchin S.,
RA   Beckerich J.-M., Beyne E., Bleykasten C., Boisrame A., Boyer J.,
RA   Cattolico L., Confanioleri F., de Daruvar A., Despons L., Fabre E.,
RA   Fairhead C., Ferry-Dumazet H., Groppi A., Hantraye F., Hennequin C.,
RA   Jauniaux N., Joyet P., Kachouri R., Kerrest A., Koszul R., Lemaire M.,
RA   Lesur I., Ma L., Muller H., Nicaud J.-M., Nikolski M., Oztas S.,
RA   Ozier-Kalogeropoulos O., Pellenz S., Potier S., Richard G.-F.,
RA   Straub M.-L., Suleau A., Swennen D., Tekaia F., Wesolowski-Louvel M.,
RA   Westhof E., Wirth B., Zeniou-Meyer M., Zivanovic Y., Bolotin-Fukuhara M.,
RA   Thierry A., Bouchier C., Caudron B., Scarpelli C., Gaillardin C.,
RA   Weissenbach J., Wincker P., Souciet J.-L.;
RT   "Genome evolution in yeasts.";
RL   Nature 430:35-44(2004).
CC   -!- FUNCTION: Catalyzes the oxidation of 3-carboxy-2-hydroxy-4-
CC       methylpentanoate (3-isopropylmalate) to 3-carboxy-4-methyl-2-
CC       oxopentanoate. The product decarboxylates to 4-methyl-2 oxopentanoate.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(2R,3S)-3-isopropylmalate + NAD(+) = 4-methyl-2-oxopentanoate
CC         + CO2 + NADH; Xref=Rhea:RHEA:32271, ChEBI:CHEBI:16526,
CC         ChEBI:CHEBI:17865, ChEBI:CHEBI:35121, ChEBI:CHEBI:57540,
CC         ChEBI:CHEBI:57945; EC=1.1.1.85;
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000250};
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035; Evidence={ECO:0000250};
CC       Note=Binds 1 Mg(2+) or Mn(2+) ion per subunit. {ECO:0000250};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine
CC       from 3-methyl-2-oxobutanoate: step 3/4.
CC   -!- SUBUNIT: Homodimer. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm.
CC   -!- SIMILARITY: Belongs to the isocitrate and isopropylmalate
CC       dehydrogenases family. {ECO:0000305}.
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DR   EMBL; X65545; CAA46514.1; -; Genomic_DNA.
DR   EMBL; CR382124; CAH00374.1; -; Genomic_DNA.
DR   PIR; S25369; S25369.
DR   RefSeq; XP_453278.1; XM_453278.1.
DR   AlphaFoldDB; P23390; -.
DR   SMR; P23390; -.
DR   STRING; 28985.XP_453278.1; -.
DR   EnsemblFungi; CAH00374; CAH00374; KLLA0_D04906g.
DR   GeneID; 2892896; -.
DR   KEGG; kla:KLLA0_D04906g; -.
DR   eggNOG; KOG0786; Eukaryota.
DR   HOGENOM; CLU_031953_0_3_1; -.
DR   InParanoid; P23390; -.
DR   OMA; EYDLGAR; -.
DR   UniPathway; UPA00048; UER00072.
DR   Proteomes; UP000000598; Chromosome D.
DR   GO; GO:0005829; C:cytosol; IEA:EnsemblFungi.
DR   GO; GO:0003862; F:3-isopropylmalate dehydrogenase activity; IEA:UniProtKB-EC.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:InterPro.
DR   GO; GO:0051287; F:NAD binding; IEA:InterPro.
DR   GO; GO:0006097; P:glyoxylate cycle; IEA:EnsemblFungi.
DR   GO; GO:0009098; P:leucine biosynthetic process; IEA:UniProtKB-UniPathway.
DR   InterPro; IPR019818; IsoCit/isopropylmalate_DH_CS.
DR   InterPro; IPR024084; IsoPropMal-DH-like_dom.
DR   InterPro; IPR004429; Isopropylmalate_DH.
DR   PANTHER; PTHR42979; PTHR42979; 1.
DR   Pfam; PF00180; Iso_dh; 1.
DR   SMART; SM01329; Iso_dh; 1.
DR   TIGRFAMs; TIGR00169; leuB; 1.
DR   PROSITE; PS00470; IDH_IMDH; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Branched-chain amino acid biosynthesis; Cytoplasm;
KW   Leucine biosynthesis; Magnesium; Manganese; Metal-binding; NAD;
KW   Oxidoreductase; Reference proteome.
FT   CHAIN           1..362
FT                   /note="3-isopropylmalate dehydrogenase"
FT                   /id="PRO_0000083610"
FT   BINDING         77..88
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
FT   BINDING         95
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         105
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         134
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         223
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250"
FT   BINDING         223
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         248
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250"
FT   BINDING         252
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250"
FT   BINDING         287..298
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
FT   SITE            141
FT                   /note="Important for catalysis"
FT                   /evidence="ECO:0000250"
FT   SITE            190
FT                   /note="Important for catalysis"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   362 AA;  38629 MW;  A2F00F5876262998 CRC64;
     MSKNIVVLPG DHVGKEVTDE AIKVLNAIAE VRPEIKFNFQ HHLIGGAAID ATGTPLPDEA
     LEASKKADAV LLGAVGGPKW GTGAVRPEQG LLKIRKELGL YANLRPCNFA SDSLLDLSPL
     KPEYAKGTDF VVVRELVGGI YFGERKEDEG DGVAWDSEKY SVPEVQRITR MAAFLALQQN
     PPLPIWSLDK ANVLASSRLW RKTVEETIKT EFPQLTVQHQ LIDSAAMILV KSPTKLNGVV
     ITNNMFGDII SDEASVIPGS LGLLPSASLA SLPDTNKAFG LYEPCHGSAP DLPANKVNPI
     ATILSAAMML KLSLDLVEEG RALEEAVRNV LDAGVRTGDL GGSNSTTEVG DAIAKAVKEI
     LA