ID G2GCK5_9ACTN Unreviewed; 347 AA.
AC G2GCK5;
DT 16-NOV-2011, integrated into UniProtKB/TrEMBL.
DT 16-NOV-2011, sequence version 1.
DT 24-JAN-2024, entry version 59.
DE RecName: Full=3-isopropylmalate dehydrogenase {ECO:0000256|HAMAP-Rule:MF_01035};
DE EC=1.1.1.85 {ECO:0000256|HAMAP-Rule:MF_01035};
DE AltName: Full=3-IPM-DH {ECO:0000256|HAMAP-Rule:MF_01035};
DE AltName: Full=Beta-IPM dehydrogenase {ECO:0000256|HAMAP-Rule:MF_01035};
DE Short=IMDH {ECO:0000256|HAMAP-Rule:MF_01035};
GN Name=leuB {ECO:0000256|HAMAP-Rule:MF_01035};
GN ORFNames=SZN_16205 {ECO:0000313|EMBL:EGX58749.1};
OS Streptomyces zinciresistens K42.
OC Bacteria; Actinomycetota; Actinomycetes; Kitasatosporales;
OC Streptomycetaceae; Streptomyces.
OX NCBI_TaxID=700597 {ECO:0000313|EMBL:EGX58749.1, ECO:0000313|Proteomes:UP000004217};
RN [1] {ECO:0000313|EMBL:EGX58749.1, ECO:0000313|Proteomes:UP000004217}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=K42 {ECO:0000313|EMBL:EGX58749.1,
RC ECO:0000313|Proteomes:UP000004217};
RA Lin Y., Hao X., Johnstone L., Miller S.J., Wei G., Rensing C.;
RL Submitted (AUG-2011) to the EMBL/GenBank/DDBJ databases.
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:0000256|HAMAP-Rule:MF_01035}.
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;
CC Evidence={ECO:0000256|ARBA:ARBA00000624, ECO:0000256|HAMAP-
CC Rule:MF_01035};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01035};
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01035};
CC Note=Binds 1 Mg(2+) or Mn(2+) ion per subunit. {ECO:0000256|HAMAP-
CC Rule:MF_01035};
CC -!- COFACTOR:
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|ARBA:ARBA00001936};
CC -!- PATHWAY: Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine
CC from 3-methyl-2-oxobutanoate: step 3/4. {ECO:0000256|HAMAP-
CC Rule:MF_01035}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01035}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01035}.
CC -!- SIMILARITY: Belongs to the isocitrate and isopropylmalate
CC dehydrogenases family. LeuB type 2 subfamily. {ECO:0000256|HAMAP-
CC Rule:MF_01035}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EGX58749.1}.
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DR EMBL; AGBF01000046; EGX58749.1; -; Genomic_DNA.
DR RefSeq; WP_007496187.1; NZ_AGBF01000046.1.
DR AlphaFoldDB; G2GCK5; -.
DR PATRIC; fig|700597.3.peg.3177; -.
DR OrthoDB; 5289857at2; -.
DR UniPathway; UPA00048; UER00072.
DR Proteomes; UP000004217; Unassembled WGS sequence.
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 Gene3D; 3.40.718.10; Isopropylmalate Dehydrogenase; 1.
DR HAMAP; MF_01035; LeuB_type2; 1.
DR InterPro; IPR019818; IsoCit/isopropylmalate_DH_CS.
DR InterPro; IPR024084; IsoPropMal-DH-like_dom.
DR InterPro; IPR023698; LeuB_actb.
DR PANTHER; PTHR43275; D-MALATE DEHYDROGENASE [DECARBOXYLATING]; 1.
DR PANTHER; PTHR43275:SF1; D-MALATE DEHYDROGENASE [DECARBOXYLATING]; 1.
DR Pfam; PF00180; Iso_dh; 1.
DR SMART; SM01329; Iso_dh; 1.
DR SUPFAM; SSF53659; Isocitrate/Isopropylmalate dehydrogenase-like; 1.
DR PROSITE; PS00470; IDH_IMDH; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|HAMAP-Rule:MF_01035};
KW Branched-chain amino acid biosynthesis {ECO:0000256|ARBA:ARBA00023304,
KW ECO:0000256|HAMAP-Rule:MF_01035};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_01035};
KW Leucine biosynthesis {ECO:0000256|ARBA:ARBA00022430, ECO:0000256|HAMAP-
KW Rule:MF_01035}; Magnesium {ECO:0000256|HAMAP-Rule:MF_01035};
KW Manganese {ECO:0000256|ARBA:ARBA00023211, ECO:0000256|HAMAP-Rule:MF_01035};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_01035};
KW NAD {ECO:0000256|HAMAP-Rule:MF_01035};
KW Oxidoreductase {ECO:0000256|HAMAP-Rule:MF_01035,
KW ECO:0000313|EMBL:EGX58749.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000004217}.
FT DOMAIN 6..341
FT /note="Isopropylmalate dehydrogenase-like"
FT /evidence="ECO:0000259|SMART:SM01329"
FT BINDING 94
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01035"
FT BINDING 104
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01035"
FT BINDING 128
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01035"
FT BINDING 219
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01035"
FT BINDING 219
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01035"
FT BINDING 243
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01035"
FT BINDING 247
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01035"
FT BINDING 279..291
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01035"
FT SITE 135
FT /note="Important for catalysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01035"
FT SITE 186
FT /note="Important for catalysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01035"
SQ SEQUENCE 347 AA; 37060 MW; 44E83079C1043E73 CRC64;
MSRSIDLAVI PGDGIGQEVV AEGLKVLSAA LPQDVKLETR EYDFGARRYH ATGETLTDAD
LDSLKRHDAI LLGAIGDPGV PSGVLERGFL LKLRFAFDHH VNLRPSKLLP GVATPLAGQP
EIDFVVVREG TEGPYTGNGG TIRKGTQHEV ATEVSVNTAF GVERVVRDAF ARAQARPRRK
LALIHKNNVL TFAGHLWTDV FNRVAEEFPE VTTEYMHVDA ATIYLVTQPE RFDVIVTDNL
FGDIITDLAA AVSGGIGVAA SGNINPDRVF PSMFEPVHGS APDIAGQGKA DPTATVLSVA
LLLRHLGHDT EADRIEDAVS ADLAERAGRP ARSTSEIGDA LAVRVAG
//