ID A0A0G9MQG0_9SPHN Unreviewed; 565 AA.
AC A0A0G9MQG0;
DT 16-SEP-2015, integrated into UniProtKB/TrEMBL.
DT 16-SEP-2015, sequence version 1.
DT 24-JAN-2024, entry version 39.
DE RecName: Full=2-isopropylmalate synthase {ECO:0000256|ARBA:ARBA00012973, ECO:0000256|HAMAP-Rule:MF_00572};
DE EC=2.3.3.13 {ECO:0000256|ARBA:ARBA00012973, ECO:0000256|HAMAP-Rule:MF_00572};
DE AltName: Full=Alpha-IPM synthase {ECO:0000256|HAMAP-Rule:MF_00572};
DE AltName: Full=Alpha-isopropylmalate synthase {ECO:0000256|HAMAP-Rule:MF_00572};
GN Name=leuA {ECO:0000256|HAMAP-Rule:MF_00572};
GN ORFNames=AAW01_01870 {ECO:0000313|EMBL:KLE32804.1}, BMF35_a1794
GN {ECO:0000313|EMBL:APE28623.1};
OS Aurantiacibacter gangjinensis.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Sphingomonadales;
OC Erythrobacteraceae; Aurantiacibacter.
OX NCBI_TaxID=502682 {ECO:0000313|EMBL:KLE32804.1, ECO:0000313|Proteomes:UP000053070};
RN [1] {ECO:0000313|EMBL:KLE32804.1, ECO:0000313|Proteomes:UP000053070}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=K7-2 {ECO:0000313|EMBL:KLE32804.1,
RC ECO:0000313|Proteomes:UP000053070};
RA Zhuang L., Liu Y., Shao Z.;
RT "The draft genome sequence of Erythrobacr gangjinensis K7-2.";
RL Submitted (APR-2015) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:APE28623.1, ECO:0000313|Proteomes:UP000183202}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CGMCC1.15024 {ECO:0000313|EMBL:APE28623.1,
RC ECO:0000313|Proteomes:UP000183202};
RA Xu L., Wu Y.-H., Cheng H., Zhou Y.-G., Wu M., Cheng L., Xu X.-W.;
RT "Complete genome sequence of two-chromosomal Erythrobacter gangjinensis
RT CGMCC 1.15024T, isolated from seawater.";
RL Submitted (NOV-2016) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the condensation of the acetyl group of acetyl-CoA
CC with 3-methyl-2-oxobutanoate (2-ketoisovalerate) to form 3-carboxy-3-
CC hydroxy-4-methylpentanoate (2-isopropylmalate). {ECO:0000256|HAMAP-
CC Rule:MF_00572}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=3-methyl-2-oxobutanoate + acetyl-CoA + H2O = (2S)-2-
CC isopropylmalate + CoA + H(+); Xref=Rhea:RHEA:21524, ChEBI:CHEBI:1178,
CC ChEBI:CHEBI:11851, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:57287, ChEBI:CHEBI:57288; EC=2.3.3.13;
CC Evidence={ECO:0000256|ARBA:ARBA00000064, ECO:0000256|HAMAP-
CC Rule:MF_00572};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00572};
CC -!- PATHWAY: Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine
CC from 3-methyl-2-oxobutanoate: step 1/4. {ECO:0000256|ARBA:ARBA00004689,
CC ECO:0000256|HAMAP-Rule:MF_00572}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_00572}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00572}.
CC -!- SIMILARITY: Belongs to the alpha-IPM synthase/homocitrate synthase
CC family. LeuA type 2 subfamily. {ECO:0000256|ARBA:ARBA00009767,
CC ECO:0000256|HAMAP-Rule:MF_00572}.
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DR EMBL; CP018097; APE28623.1; -; Genomic_DNA.
DR EMBL; LBHC01000001; KLE32804.1; -; Genomic_DNA.
DR RefSeq; WP_047005653.1; NZ_LBHC01000001.1.
DR AlphaFoldDB; A0A0G9MQG0; -.
DR STRING; 502682.BMF35_a1794; -.
DR KEGG; egn:BMF35_a1794; -.
DR PATRIC; fig|502682.8.peg.382; -.
DR OrthoDB; 9803573at2; -.
DR UniPathway; UPA00048; UER00070.
DR Proteomes; UP000053070; Unassembled WGS sequence.
DR Proteomes; UP000183202; Chromosome i.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0003852; F:2-isopropylmalate synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0003985; F:acetyl-CoA C-acetyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0009098; P:leucine biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd07942; DRE_TIM_LeuA; 1.
DR Gene3D; 3.30.160.270; -; 1.
DR Gene3D; 3.20.20.70; Aldolase class I; 1.
DR HAMAP; MF_00572; LeuA_type2; 1.
DR InterPro; IPR013709; 2-isopropylmalate_synth_dimer.
DR InterPro; IPR002034; AIPM/Hcit_synth_CS.
DR InterPro; IPR013785; Aldolase_TIM.
DR InterPro; IPR005668; IPM_Synthase.
DR InterPro; IPR036230; LeuA_allosteric_dom_sf.
DR InterPro; IPR039371; LeuA_N_DRE-TIM.
DR InterPro; IPR000891; PYR_CT.
DR NCBIfam; TIGR00970; leuA_yeast; 1.
DR PANTHER; PTHR46911; -; 1.
DR PANTHER; PTHR46911:SF1; 2-ISOPROPYLMALATE SYNTHASE; 1.
DR Pfam; PF00682; HMGL-like; 1.
DR Pfam; PF08502; LeuA_dimer; 1.
DR SMART; SM00917; LeuA_dimer; 1.
DR SUPFAM; SSF110921; 2-isopropylmalate synthase LeuA, allosteric (dimerisation) domain; 1.
DR SUPFAM; SSF51569; Aldolase; 1.
DR SUPFAM; SSF89000; post-HMGL domain-like; 1.
DR PROSITE; PS00815; AIPM_HOMOCIT_SYNTH_1; 1.
DR PROSITE; PS00816; AIPM_HOMOCIT_SYNTH_2; 1.
DR PROSITE; PS50991; PYR_CT; 1.
PE 3: Inferred from homology;
KW Acyltransferase {ECO:0000313|EMBL:APE28623.1};
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605, ECO:0000256|HAMAP-
KW Rule:MF_00572};
KW Branched-chain amino acid biosynthesis {ECO:0000256|ARBA:ARBA00023304,
KW ECO:0000256|HAMAP-Rule:MF_00572};
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00572};
KW Leucine biosynthesis {ECO:0000256|ARBA:ARBA00022430, ECO:0000256|HAMAP-
KW Rule:MF_00572}; Magnesium {ECO:0000256|HAMAP-Rule:MF_00572};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_00572}; Reference proteome {ECO:0000313|Proteomes:UP000053070};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00572}.
FT DOMAIN 33..307
FT /note="Pyruvate carboxyltransferase"
FT /evidence="ECO:0000259|PROSITE:PS50991"
FT REGION 441..565
FT /note="Regulatory domain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 42
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 246
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 248
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 282
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
SQ SEQUENCE 565 AA; 62845 MW; 55254C79881DC871 CRC64;
MPMHSDPKTK YRPFPQVDLP DRQWPTRSIT APPRWLSTDL RDGNQSIIDP MDRAKKTRFF
DLLLEVGVKE IEVGFPAAGQ TEFDFISWLV QSGRVPEDVT VQVLTQSRED LIARSFESLE
GAHRAIVHLY NALSPAWRDI VFRMSRDEVR DIAIRGAQQL VDEAAKRPGT DWHYQYSPET
FSTAELDFSL EVCEAVMRTV GATKDRPLIL NLPATVEAAT PNIYADQIEY FCRNLPNREA
AIISLHTHND RGTGVAAAEL GLMAGADRVE GCLFGNGERT GNCCLVTVAL NMYTQGVDPG
LDFSDIDKVI ETVEYCNALP VHQRHPYGGE LVYTAFSGSH QDAIKKGFEA RGAQNDEHWR
VPYLPIDPAD LGRNYEAVIR VNSQSGKGGF AWVLQQDQGL KLPKRLQADF SKHVQHMADG
EGHELTAEDI WHCFRETYYV QSERRRFRLV DYDESRASDG TRIFTGTVEV DGEEQRVSGR
GKGLISSVLS TIREAFDVDL EVADYSEHAL GTGVDSRAAA YIEWTTPDGR NGWGVGIDED
VATASVRAIL SAANGAAHGP GTPRF
//