ID C0N6S5_9GAMM Unreviewed; 601 AA.
AC C0N6S5;
DT 05-MAY-2009, integrated into UniProtKB/TrEMBL.
DT 05-MAY-2009, sequence version 1.
DT 27-MAR-2024, entry version 75.
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_1 {ECO:0000313|EMBL:EEF79613.1};
GN Synonyms=leuA {ECO:0000256|HAMAP-Rule:MF_00572};
GN ORFNames=MDMS009_2200 {ECO:0000313|EMBL:EEF79613.1};
OS Methylophaga thiooxydans DMS010.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Thiotrichales;
OC Piscirickettsiaceae; Methylophaga.
OX NCBI_TaxID=637616 {ECO:0000313|EMBL:EEF79613.1, ECO:0000313|Proteomes:UP000004679};
RN [1] {ECO:0000313|EMBL:EEF79613.1, ECO:0000313|Proteomes:UP000004679}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DMS010 {ECO:0000313|EMBL:EEF79613.1,
RC ECO:0000313|Proteomes:UP000004679};
RX PubMed=21478352; DOI=10.1128/JB.00388-11;
RA Boden R., Ferriera S., Johnson J., Kelly D.P., Murrell J.C., Schafer H.;
RT "Draft genome sequence of the chemolithoheterotrophic, halophilic
RT methylotroph Methylophaga thiooxydans DMS010.";
RL J. Bacteriol. 193:3154-3155(2011).
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; GG657899; EEF79613.1; -; Genomic_DNA.
DR AlphaFoldDB; C0N6S5; -.
DR HOGENOM; CLU_004588_3_0_6; -.
DR UniPathway; UPA00048; UER00070.
DR Proteomes; UP000004679; Unassembled WGS sequence.
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:EEF79613.1};
KW Amino-acid biosynthesis {ECO:0000256|HAMAP-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|HAMAP-Rule:MF_00572};
KW 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:UP000004679};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00572}.
FT DOMAIN 65..339
FT /note="Pyruvate carboxyltransferase"
FT /evidence="ECO:0000259|PROSITE:PS50991"
FT REGION 1..20
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 471..601
FT /note="Regulatory domain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 74
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 278
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 280
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 314
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
SQ SEQUENCE 601 AA; 66624 MW; 241A2E9D6C3A51BF CRC64;
MVDFRSPPVN PTGNVSNSRK VSQLTIDDDN QESTMITNPA QKYRRFEPIQ LTDRQWPNAT
LDKAPIWMST DLRDGNQALI DPMSVDTKLR YFDELVKIGF KEIEVGFPSA SETDFNVVRR
LIEENRIPDD VTIEVLTQAR EDLIARTVAS LKGARRVILH MYNPISPTFR EVVYKSDKAG
VKAIAERGTR WVKEMTAAQP ETEWVYQYSP EVFSSTEVEF AKEVCDAVSA VWQPTPEHKM
ILNLPATVEM STPNTYADQI EWMHRNLNNR DSIILSVHPH NDRGTAVAAA ELAVMAGADR
VEGCLFGNGE RTGNVDLVTL ALNLYSQGIN PELDFSHIDQ IRQMYEETTQ LPVHPRHPYA
GELVFTAFSG SHQDAIKKGF AVQTNAIYWQ VPYLPIDPAD LNRSYDAVVR VNSQSGKGGV
SFLLQQAAGF ELPRRLQIEF SKIVQKVSDE TSKEVNSSNI VSLFESSYLQ VAAPYNYMSS
HVIDEETSNV ITKIVANYDE QRIELHGQGN GPLDAAAKAI SQHLGVTVTV ADYHEHGMSA
GSDAAAVSYV EVKVGDNDTV FGVGQDKNIT TAAIKALING VNRLLIGHAP ELATAKQEAV
S
//
