ID N6X268_9ACTO Unreviewed; 352 AA.
AC N6X268;
DT 26-JUN-2013, integrated into UniProtKB/TrEMBL.
DT 26-JUN-2013, sequence version 1.
DT 24-JAN-2024, entry version 52.
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 ECO:0000313|EMBL:ENO17846.1};
GN ORFNames=HMPREF9004_1756 {ECO:0000313|EMBL:ENO17846.1};
OS Schaalia cardiffensis F0333.
OC Bacteria; Actinomycetota; Actinomycetes; Actinomycetales; Actinomycetaceae;
OC Schaalia.
OX NCBI_TaxID=888050 {ECO:0000313|EMBL:ENO17846.1, ECO:0000313|Proteomes:UP000013015};
RN [1] {ECO:0000313|EMBL:ENO17846.1, ECO:0000313|Proteomes:UP000013015}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=F0333 {ECO:0000313|EMBL:ENO17846.1,
RC ECO:0000313|Proteomes:UP000013015};
RA Aqrawi P., Ayvaz T., Bess C., Blankenburg K., Coyle M., Deng J., Forbes L.,
RA Fowler G., Francisco L., Fu Q., Gibbs R., Gross S., Gubbala S., Hale W.,
RA Hemphill L., Highlander S., Hirani K., Jackson L., Jakkamsetti A.,
RA Javaid M., Jayaseelan J.C., Jiang H., Joshi V., Korchina V., Kovar C.,
RA Lara F., Lee S., Liu Y., Mata R., Mathew T., Munidasa M., Muzny D.,
RA Nazareth L., Ngo R., Nguyen L., Nguyen N., Okwuonu G., Ongeri F.,
RA Palculict T., Patil S., Petrosino J., Pham C., Pham P., Pu L.-L., Qin X.,
RA Qu J., Reid J., Ross M., Ruth R., Saada N., San Lucas F., Santibanez J.,
RA Shang Y., Simmons D., Song X.-Z., Tang L.-Y., Thornton R., Warren J.,
RA Weissenberger G., Wilczek-Boney K., Worley K., Youmans B., Zhang J.,
RA Zhang L., Zhao Z., Zhou C., Zhu D., Zhu Y.;
RT "Reference genome for the Human Microbiome Project.";
RL Submitted (MAR-2013) 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:ENO17846.1}.
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DR EMBL; AQHZ01000024; ENO17846.1; -; Genomic_DNA.
DR RefSeq; WP_005964570.1; NZ_KB822675.1.
DR AlphaFoldDB; N6X268; -.
DR STRING; 888050.HMPREF9004_1756; -.
DR PATRIC; fig|888050.3.peg.1689; -.
DR eggNOG; COG0473; Bacteria.
DR HOGENOM; CLU_031953_0_1_11; -.
DR OrthoDB; 5289857at2; -.
DR UniPathway; UPA00048; UER00072.
DR Proteomes; UP000013015; 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:ENO17846.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000013015}.
FT DOMAIN 5..347
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 352 AA; 37074 MW; 8973C199B68FC6E8 CRC64;
MTTLKLAVIP GDGIGKEVVP EGLKVLGAVL EGSDITLETT SFDLGADRWH RTGDTLTEDD
LEAIKTHDAI LLGAVGDPSV PSGVLERGLL LKLRFALDHY VNLRPSKHYE GVPSPLMAPE
GIDFIVVREG TEGLYCGNGG AVRVGTPQEI ATEVSVNTAF GVERLVRFAF EKANARPAKH
LTLVHKHNVL VNAGHLWRRT VEALGAEYPE VRVDYCHVDA ATIYMVSDPQ RFDVIVTDNL
FGDILTDEAG AVTGGIGLSA SGNINPEGAF PSMFEPVHGS APDIAGQGKA DPTATIASVA
LLLDHIGRAD LATKIEAAIE SDMAARAHAA ATGAPLERST SQIGDALVAA LN
//
