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LEU3_RHOPA
ID   LEU3_RHOPA              Reviewed;         370 AA.
AC   Q6ND82;
DT   10-JAN-2006, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   03-AUG-2022, entry version 105.
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=RPA0227;
OS   Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bradyrhizobiaceae; Rhodopseudomonas.
OX   NCBI_TaxID=258594;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-98 / CGA009;
RX   PubMed=14704707; DOI=10.1038/nbt923;
RA   Larimer F.W., Chain P., Hauser L., Lamerdin J.E., Malfatti S., Do L.,
RA   Land M.L., Pelletier D.A., Beatty J.T., Lang A.S., Tabita F.R.,
RA   Gibson J.L., Hanson T.E., Bobst C., Torres y Torres J.L., Peres C.,
RA   Harrison F.H., Gibson J., Harwood C.S.;
RT   "Complete genome sequence of the metabolically versatile photosynthetic
RT   bacterium Rhodopseudomonas palustris.";
RL   Nat. Biotechnol. 22:55-61(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       {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; BX572593; CAE25671.1; -; Genomic_DNA.
DR   RefSeq; WP_011155795.1; NC_005296.1.
DR   AlphaFoldDB; Q6ND82; -.
DR   SMR; Q6ND82; -.
DR   STRING; 258594.RPA0227; -.
DR   PRIDE; Q6ND82; -.
DR   EnsemblBacteria; CAE25671; CAE25671; RPA0227.
DR   GeneID; 66891233; -.
DR   KEGG; rpa:RPA0227; -.
DR   eggNOG; COG0473; Bacteria.
DR   HOGENOM; CLU_031953_0_3_5; -.
DR   OMA; EYDLGAR; -.
DR   PhylomeDB; Q6ND82; -.
DR   BioCyc; RPAL258594:TX73_RS01170-MON; -.
DR   UniPathway; UPA00048; UER00072.
DR   Proteomes; UP000001426; 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..370
FT                   /note="3-isopropylmalate dehydrogenase"
FT                   /id="PRO_0000083739"
FT   BINDING         77..90
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         97
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         107
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         135
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         226
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         226
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         250
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         254
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         290..302
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   SITE            142
FT                   /note="Important for catalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   SITE            193
FT                   /note="Important for catalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
SQ   SEQUENCE   370 AA;  39643 MW;  86599852BE4D615A CRC64;
     MATHKLLLLP GDGIGTEVMA EVSRLIDWLN KAGIASFETE HGLVGGAAYD ADKVAITDAT
     MALAQASDAV IFGAVGGPKW DGVPYDARPE AGLLRLRKDL GLFANLRPAV CYPALADSSS
     LKRDVVEGLD IMIVRELTGG VYFGEPKTIT DLGNGQKRAV DTQVYDTYEI ERIGRVAFDL
     ARKRRNKVTS MEKRNVMKTG VLWNEVITAV HDREYKDVQL DHQLADSGGM NLVKWPKQFD
     VIVTDNLFGD MLSDIAAMLT GSLGMLPSAS LGEVDAKTGK RKSMYEPVHG SAPDIAGKGM
     ANPVAMLASF GMALRYSLDM GALADKLDEA IAAVLAKGLR TADIKSEGTT VISTSQMGEA
     IVTELQALHA
 
 
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