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LEU3_RHORT
ID   LEU3_RHORT              Reviewed;         370 AA.
AC   Q2RV53;
DT   19-SEP-2006, integrated into UniProtKB/Swiss-Prot.
DT   24-JAN-2006, sequence version 1.
DT   03-AUG-2022, entry version 99.
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=Rru_A1191;
OS   Rhodospirillum rubrum (strain ATCC 11170 / ATH 1.1.1 / DSM 467 / LMG 4362 /
OS   NCIMB 8255 / S1).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodospirillales;
OC   Rhodospirillaceae; Rhodospirillum.
OX   NCBI_TaxID=269796;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 11170 / ATH 1.1.1 / DSM 467 / LMG 4362 / NCIMB 8255 / S1;
RX   PubMed=21886856; DOI=10.4056/sigs.1804360;
RA   Munk A.C., Copeland A., Lucas S., Lapidus A., Del Rio T.G., Barry K.,
RA   Detter J.C., Hammon N., Israni S., Pitluck S., Brettin T., Bruce D.,
RA   Han C., Tapia R., Gilna P., Schmutz J., Larimer F., Land M., Kyrpides N.C.,
RA   Mavromatis K., Richardson P., Rohde M., Goeker M., Klenk H.P., Zhang Y.,
RA   Roberts G.P., Reslewic S., Schwartz D.C.;
RT   "Complete genome sequence of Rhodospirillum rubrum type strain (S1).";
RL   Stand. Genomic Sci. 4:293-302(2011).
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; CP000230; ABC21992.1; -; Genomic_DNA.
DR   RefSeq; WP_011388946.1; NC_007643.1.
DR   RefSeq; YP_426279.1; NC_007643.1.
DR   AlphaFoldDB; Q2RV53; -.
DR   SMR; Q2RV53; -.
DR   STRING; 269796.Rru_A1191; -.
DR   PRIDE; Q2RV53; -.
DR   EnsemblBacteria; ABC21992; ABC21992; Rru_A1191.
DR   KEGG; rru:Rru_A1191; -.
DR   PATRIC; fig|269796.9.peg.1255; -.
DR   eggNOG; COG0473; Bacteria.
DR   HOGENOM; CLU_031953_0_3_5; -.
DR   OMA; EYDLGAR; -.
DR   OrthoDB; 1551125at2; -.
DR   PhylomeDB; Q2RV53; -.
DR   UniPathway; UPA00048; UER00072.
DR   Proteomes; UP000001929; 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_0000250135"
FT   BINDING         99
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         109
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         137
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         227
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         227
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         251
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         255
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            144
FT                   /note="Important for catalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   SITE            195
FT                   /note="Important for catalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
SQ   SEQUENCE   370 AA;  39536 MW;  EB6B4847C8DF8B6B CRC64;
     MPVSKKILFL AGDGIGPEVM AQVRRVMDWL NQTGRTAFEV EDALVGGAAY DAQGTPLHDD
     TVALALAADA VLLGAVGGPK WDASLPFELK PERGLLRLRK DLELFANLRP AMVFDALAEA
     STLKTELVSG LDVMIVRELT GGVYFGQPRG ISALPNGERR GVNTQVYDTH EIVRVAKVAF
     DLAGKRGKRL CSVEKANVME SGLLWREEVT KLGADYPEIA LSHMYADNCA MQLVRQPKQF
     DVIVTDNLFG DILSDCAAML TGSLGMLPSA SLGAADAAGN RRAMYEPVHG SAPDIAGQDK
     ANPLATILSF SMMLRYSFDL AEEADLVDNA VRGVLAKGLR TGDIFQPGKT LVGTTGMGDA
     LLAEMAQLAN
 
 
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