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LEU3_HAHCH
ID   LEU3_HAHCH              Reviewed;         360 AA.
AC   Q2SJD6;
DT   19-SEP-2006, integrated into UniProtKB/Swiss-Prot.
DT   24-JAN-2006, sequence version 1.
DT   03-AUG-2022, entry version 98.
DE   RecName: Full=3-isopropylmalate dehydrogenase {ECO:0000255|HAMAP-Rule:MF_01033};
DE            EC=1.1.1.85 {ECO:0000255|HAMAP-Rule:MF_01033};
DE   AltName: Full=3-IPM-DH {ECO:0000255|HAMAP-Rule:MF_01033};
DE   AltName: Full=Beta-IPM dehydrogenase {ECO:0000255|HAMAP-Rule:MF_01033};
DE            Short=IMDH {ECO:0000255|HAMAP-Rule:MF_01033};
GN   Name=leuB {ECO:0000255|HAMAP-Rule:MF_01033}; OrderedLocusNames=HCH_02430;
OS   Hahella chejuensis (strain KCTC 2396).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Oceanospirillales;
OC   Hahellaceae; Hahella.
OX   NCBI_TaxID=349521;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=KCTC 2396;
RX   PubMed=16352867; DOI=10.1093/nar/gki1016;
RA   Jeong H., Yim J.H., Lee C., Choi S.-H., Park Y.K., Yoon S.H., Hur C.-G.,
RA   Kang H.-Y., Kim D., Lee H.H., Park K.H., Park S.-H., Park H.-S., Lee H.K.,
RA   Oh T.K., Kim J.F.;
RT   "Genomic blueprint of Hahella chejuensis, a marine microbe producing an
RT   algicidal agent.";
RL   Nucleic Acids Res. 33:7066-7073(2005).
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       {ECO:0000255|HAMAP-Rule:MF_01033}.
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; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01033};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01033};
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01033};
CC       Note=Binds 1 Mg(2+) or Mn(2+) ion per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_01033};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine
CC       from 3-methyl-2-oxobutanoate: step 3/4. {ECO:0000255|HAMAP-
CC       Rule:MF_01033}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01033}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01033}.
CC   -!- SIMILARITY: Belongs to the isocitrate and isopropylmalate
CC       dehydrogenases family. LeuB type 1 subfamily. {ECO:0000255|HAMAP-
CC       Rule:MF_01033}.
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DR   EMBL; CP000155; ABC29238.1; -; Genomic_DNA.
DR   RefSeq; WP_011396307.1; NC_007645.1.
DR   AlphaFoldDB; Q2SJD6; -.
DR   SMR; Q2SJD6; -.
DR   STRING; 349521.HCH_02430; -.
DR   EnsemblBacteria; ABC29238; ABC29238; HCH_02430.
DR   KEGG; hch:HCH_02430; -.
DR   eggNOG; COG0473; Bacteria.
DR   HOGENOM; CLU_031953_0_3_6; -.
DR   OMA; EYDLGAR; -.
DR   OrthoDB; 1551125at2; -.
DR   UniPathway; UPA00048; UER00072.
DR   Proteomes; UP000000238; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0003862; F:3-isopropylmalate dehydrogenase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:InterPro.
DR   GO; GO:0051287; F:NAD binding; IEA:InterPro.
DR   GO; GO:0009098; P:leucine biosynthetic process; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01033; LeuB_type1; 1.
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..360
FT                   /note="3-isopropylmalate dehydrogenase"
FT                   /id="PRO_0000250118"
FT   BINDING         76..89
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         96
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         106
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         134
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         224
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         224
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         248
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         252
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         282..294
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   SITE            141
FT                   /note="Important for catalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   SITE            192
FT                   /note="Important for catalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
SQ   SEQUENCE   360 AA;  38292 MW;  3A93EB3E16EC4CEE CRC64;
     MAKQVLILPG DGIGPEIVAQ ARNVLDVVNN KFSLGLTFTE GLVGGAAIDT TGVPFPEETL
     ATAEAADAIL LGAVGGPKWD KLDMAIRPEK GLLGLRSGLE LFANLRPAIL YPQLAEASSL
     RPEVVAGLDI LIVRELTGGI YFGKPRGVRT LENGEREGFN TYVYSESEIR RIGRVAFEAA
     QKRNKRLCSV DKANVLEVTV LWREVMDELA KEYPDVELSH MYVDNAAMQL VRAPKQFDVI
     VTGNMFGDIL SDEAAMLTGS IGMLPSASLN AAGKGMYEPC HGSAPDIAGQ NMANPLATIL
     SAAMMLRYSL AAEDAAAAIE QAVSDVLDQG LRTRDIAGSS GESVSTQAMG EAVARVLADR
 
 
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