ID   LEU1_PECCP              Reviewed;         532 AA.
AC   C6DEV8;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   01-SEP-2009, sequence version 1.
DT   25-MAY-2022, entry version 73.
DE   RecName: Full=2-isopropylmalate synthase {ECO:0000255|HAMAP-Rule:MF_01025};
DE            EC=2.3.3.13 {ECO:0000255|HAMAP-Rule:MF_01025};
DE   AltName: Full=Alpha-IPM synthase {ECO:0000255|HAMAP-Rule:MF_01025};
DE   AltName: Full=Alpha-isopropylmalate synthase {ECO:0000255|HAMAP-Rule:MF_01025};
GN   Name=leuA {ECO:0000255|HAMAP-Rule:MF_01025}; OrderedLocusNames=PC1_3607;
OS   Pectobacterium carotovorum subsp. carotovorum (strain PC1).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Pectobacteriaceae; Pectobacterium.
OX   NCBI_TaxID=561230;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PC1;
RG   US DOE Joint Genome Institute;
RA   Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Tice H., Bruce D.,
RA   Goodwin L., Pitluck S., Munk A.C., Brettin T., Detter J.C., Han C.,
RA   Tapia R., Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N.,
RA   Balakrishnan V., Glasner J., Perna N.T.;
RT   "Complete sequence of Pectobacterium carotovorum subsp. carotovorum PC1.";
RL   Submitted (JUL-2009) 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-oxoisovalerate) to form 3-carboxy-3-
CC       hydroxy-4-methylpentanoate (2-isopropylmalate). {ECO:0000255|HAMAP-
CC       Rule:MF_01025}.
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:0000255|HAMAP-Rule:MF_01025};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine
CC       from 3-methyl-2-oxobutanoate: step 1/4. {ECO:0000255|HAMAP-
CC       Rule:MF_01025}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000255|HAMAP-Rule:MF_01025}.
CC   -!- SIMILARITY: Belongs to the alpha-IPM synthase/homocitrate synthase
CC       family. LeuA type 1 subfamily. {ECO:0000255|HAMAP-Rule:MF_01025}.
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DR   EMBL; CP001657; ACT14622.1; -; Genomic_DNA.
DR   RefSeq; WP_015841738.1; NC_012917.1.
DR   AlphaFoldDB; C6DEV8; -.
DR   SMR; C6DEV8; -.
DR   STRING; 561230.PC1_3607; -.
DR   EnsemblBacteria; ACT14622; ACT14622; PC1_3607.
DR   KEGG; pct:PC1_3607; -.
DR   eggNOG; COG0119; Bacteria.
DR   HOGENOM; CLU_022158_0_1_6; -.
DR   OMA; NTMRMLV; -.
DR   OrthoDB; 840579at2; -.
DR   UniPathway; UPA00048; UER00070.
DR   Proteomes; UP000002736; Chromosome.
DR   GO; GO:0003852; F:2-isopropylmalate synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009098; P:leucine biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.20.20.70; -; 1.
DR   Gene3D; 3.30.160.270; -; 1.
DR   HAMAP; MF_01025; LeuA_type1; 1.
DR   InterPro; IPR013709; 2-isopropylmalate_synth_dimer.
DR   InterPro; IPR002034; AIPM/Hcit_synth_CS.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR036230; LeuA_allosteric_dom_sf.
DR   InterPro; IPR005671; LeuA_bact_synth.
DR   InterPro; IPR000891; PYR_CT.
DR   Pfam; PF00682; HMGL-like; 1.
DR   Pfam; PF08502; LeuA_dimer; 1.
DR   SMART; SM00917; LeuA_dimer; 1.
DR   SUPFAM; SSF110921; SSF110921; 1.
DR   TIGRFAMs; TIGR00973; leuA_bact; 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   Amino-acid biosynthesis; Branched-chain amino acid biosynthesis;
KW   Leucine biosynthesis; Transferase.
FT   CHAIN           1..532
FT                   /note="2-isopropylmalate synthase"
FT                   /id="PRO_1000213316"
FT   DOMAIN          5..267
FT                   /note="Pyruvate carboxyltransferase"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01151"
FT   REGION          513..532
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   532 AA;  58727 MW;  EC82F9353C2BFD6A CRC64;
     MSEQVIIFDT TLRDGEQALQ ASLSVKEKLQ IAFALERMGV DVMEVGFPVS SPGDFESVQT
     IARNIKNSRV CGLTRCVEKD IDVAAEALRV AEAFRIHTFI ATSPMHIATK LRSTLDEVIE
     RAIYMIKRAR NYTDDVEFSC EDAGRTPIPD LCRVVEAAIN AGARTINIPD TVGYTMPHEF
     GNIISSLYQH VPNIDKAIIS VHTHDDLGLA VGNAMAAVHA GARQVEGTLN GIGERAGNCS
     LEEVIMAIKT RHNILNVHTN INHQEIYRTS QLVSQICNMP IPANKAVVGA NAFAHSSGIH
     QDGVLKNREN YEIMTPESIG LKEVQLNLTS RSGRAAVKHR MEEMGYQDSD YNLDDLYSAF
     LKLADKKGQV FDYDLEALAF INRQQEEPEF YHLDYFSVQS GSSVMATASV KLICGEETQS
     EAATGNGPVD AVYQAINRIT GYQVSLVKYQ LTAKGQGRDA LGQVDIVADY QGRRFHGVGL
     ATDIVESSAQ AMVNVLNNIK RAQQVEKEIQ RLQQHNNQQQ NDSKQQNSQE TV