LEU3_VIBPA
ID LEU3_VIBPA Reviewed; 363 AA.
AC Q87SS8;
DT 25-JUL-2003, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2003, sequence version 1.
DT 03-AUG-2022, entry version 114.
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=VP0344;
OS Vibrio parahaemolyticus serotype O3:K6 (strain RIMD 2210633).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Vibrionales; Vibrionaceae;
OC Vibrio.
OX NCBI_TaxID=223926;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=RIMD 2210633;
RX PubMed=12620739; DOI=10.1016/s0140-6736(03)12659-1;
RA Makino K., Oshima K., Kurokawa K., Yokoyama K., Uda T., Tagomori K.,
RA Iijima Y., Najima M., Nakano M., Yamashita A., Kubota Y., Kimura S.,
RA Yasunaga T., Honda T., Shinagawa H., Hattori M., Iida T.;
RT "Genome sequence of Vibrio parahaemolyticus: a pathogenic mechanism
RT distinct from that of V. cholerae.";
RL Lancet 361:743-749(2003).
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; BA000031; BAC58607.1; -; Genomic_DNA.
DR RefSeq; NP_796723.1; NC_004603.1.
DR RefSeq; WP_005459506.1; NC_004603.1.
DR AlphaFoldDB; Q87SS8; -.
DR SMR; Q87SS8; -.
DR STRING; 223926.28805327; -.
DR EnsemblBacteria; BAC58607; BAC58607; BAC58607.
DR GeneID; 1187811; -.
DR KEGG; vpa:VP0344; -.
DR PATRIC; fig|223926.6.peg.331; -.
DR eggNOG; COG0473; Bacteria.
DR HOGENOM; CLU_031953_0_3_6; -.
DR OMA; EYDLGAR; -.
DR UniPathway; UPA00048; UER00072.
DR Proteomes; UP000002493; Chromosome 1.
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..363
FT /note="3-isopropylmalate dehydrogenase"
FT /id="PRO_0000083780"
FT BINDING 79..92
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT BINDING 100
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT BINDING 110
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT BINDING 139
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT BINDING 228
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT BINDING 228
FT /ligand="substrate"
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 256
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT BINDING 286..298
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT SITE 146
FT /note="Important for catalysis"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT SITE 196
FT /note="Important for catalysis"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
SQ SEQUENCE 363 AA; 39334 MW; 026F5ED0962D4B86 CRC64;
MTDKSYKIAV LPGDGIGPEV MAQAHKVLDA IEQKHGISFE REEHDVGGIA IDNHGCPLPE
STVTACEESD AVLFGSVGGP KWEHLPPNDQ PERGALLPLR KHFQLFCNLR PAQIHAGLEA
FSPLRADISG RGFDIVVVRE LTGGIYFGQP KGREGEGANE KAFDTEVYHR YEIERIAKIA
FESARLRRKK VCSIDKANVL QSSILWREVV EEIAKDYPDV ELSHMYIDNA TMQLIKDPAQ
FDVMLCSNIF GDIISDECAM ITGSMGMLPS ASLNESKFGL YEPAGGSAPD IAGKNIANPV
AQILSAALML RYSLGEEAAA QDIESAVSKA LSAGELTADL ASDKPALTTS EMGDKIAEYI
LNS
