LEU3_BURP1
ID LEU3_BURP1 Reviewed; 355 AA.
AC Q3JKG9;
DT 19-SEP-2006, integrated into UniProtKB/Swiss-Prot.
DT 08-NOV-2005, sequence version 1.
DT 03-AUG-2022, entry version 100.
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};
GN OrderedLocusNames=BURPS1710b_A0775;
OS Burkholderia pseudomallei (strain 1710b).
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC Burkholderiaceae; Burkholderia; pseudomallei group.
OX NCBI_TaxID=320372;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=1710b;
RX PubMed=20333227; DOI=10.1093/gbe/evq003;
RA Losada L., Ronning C.M., DeShazer D., Woods D., Fedorova N., Kim H.S.,
RA Shabalina S.A., Pearson T.R., Brinkac L., Tan P., Nandi T., Crabtree J.,
RA Badger J., Beckstrom-Sternberg S., Saqib M., Schutzer S.E., Keim P.,
RA Nierman W.C.;
RT "Continuing evolution of Burkholderia mallei through genome reduction and
RT large-scale rearrangements.";
RL Genome Biol. Evol. 2:102-116(2010).
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; CP000125; ABA53170.1; -; Genomic_DNA.
DR RefSeq; WP_004187693.1; NC_007435.1.
DR AlphaFoldDB; Q3JKG9; -.
DR SMR; Q3JKG9; -.
DR EnsemblBacteria; ABA53170; ABA53170; BURPS1710b_A0775.
DR GeneID; 56598059; -.
DR KEGG; bpm:BURPS1710b_A0775; -.
DR HOGENOM; CLU_031953_0_3_4; -.
DR OMA; EYDLGAR; -.
DR OrthoDB; 1551125at2; -.
DR UniPathway; UPA00048; UER00072.
DR Proteomes; UP000002700; Chromosome II.
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.
FT CHAIN 1..355
FT /note="3-isopropylmalate dehydrogenase"
FT /id="PRO_0000250107"
FT BINDING 90
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT BINDING 100
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT BINDING 128
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT BINDING 222
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT BINDING 222
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT BINDING 246
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
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 280..292
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT SITE 135
FT /note="Important for catalysis"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT SITE 190
FT /note="Important for catalysis"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
SQ SEQUENCE 355 AA; 38187 MW; 8BB994DF67538F7A CRC64;
MKIAVLPGDG IGPEIVNEAV KVLNALDEKF ELEQAPVGGA GYEASGHPLP DATLALAKEA
DAILFGAVGD WKYDSLERAL RPEQAILGLR KHLELFANFR PAICYPQLVD ASPLKPELVA
GLDILIVREL NGDIYFGQPR GVRAAPDGPF AGAREGFDTM RYSEPEVRRI AHVAFQAARK
RAKKLLSVDK SNVLETSQFW RDVMIDVSKE YADVELSHMY VDNAAMQLAK APKQFDVIVT
GNMFGDILSD EASMLTGSIG MLPSASLDQR NKGLYEPSHG SAPDIAGKGI ANPLATILSA
AMLLRYSLNR AEQADRIERA VKAVLEQGYR TGDIATPGCK QVGTAAMGDA VVAAL
