ID   LEU1_SHESR              Reviewed;         522 AA.
AC   Q0HZT4;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-OCT-2006, sequence version 1.
DT   25-MAY-2022, entry version 90.
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};
GN   OrderedLocusNames=Shewmr7_0368;
OS   Shewanella sp. (strain MR-7).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales;
OC   Shewanellaceae; Shewanella.
OX   NCBI_TaxID=60481;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MR-7;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Kiss H., Brettin T., Bruce D., Han C., Tapia R., Gilna P., Schmutz J.,
RA   Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N., Nealson K.,
RA   Konstantinidis K., Klappenbach J., Tiedje J., Richardson P.;
RT   "Complete sequence of chromosome 1 of Shewanella sp. MR-7.";
RL   Submitted (AUG-2006) 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; CP000444; ABI41371.1; -; Genomic_DNA.
DR   RefSeq; WP_011624911.1; NC_008322.1.
DR   AlphaFoldDB; Q0HZT4; -.
DR   SMR; Q0HZT4; -.
DR   EnsemblBacteria; ABI41371; ABI41371; Shewmr7_0368.
DR   KEGG; shm:Shewmr7_0368; -.
DR   HOGENOM; CLU_022158_0_1_6; -.
DR   OMA; NTMRMLV; -.
DR   OrthoDB; 840579at2; -.
DR   UniPathway; UPA00048; UER00070.
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..522
FT                   /note="2-isopropylmalate synthase"
FT                   /id="PRO_1000149292"
FT   DOMAIN          5..267
FT                   /note="Pyruvate carboxyltransferase"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01151"
SQ   SEQUENCE   522 AA;  57023 MW;  65ECA99BA71EC9A9 CRC64;
     MSNRVIIFDT TLRDGEQALA ASLSVKEKLQ IAMALERLGV DVMEVGFPVS SPGDFESVQT
     IARTIKNSRV CALSRALEKD IDAAAQALSV AEQFRIHTFI STSTIHVESK LKRSFEQVLE
     MAVGAVKYAR RFTDDVEFSC EDAGRTPIDN LCRMVEAAIH AGARTINIPD TVGYTVPSEF
     GGIIQTLFNR VPNIDQAIIS VHCHDDLGMS VANSITAVQH GARQIECTMN GIGERAGNCS
     LEEIAMILAT RKNLLGVETG INAKEIHRTS NLVSQLCNMP IQSNKAIVGA NAFTHSSGIH
     QDGMLKAQNT YEIMTPESIG LNRNNLNMTS RSGRHVIKHR MEEMGYSEQN YNLDALYEQF
     LHLADKKGQV FDYDLEALAF MEAQAAEDNF YQLQQLVVQS DSTEGVATAT VRIDVGGEIK
     TEAATGNGPV DAAYNAIARA TDRRIDIISY KLSAKGEGQN ALGQVDITAV YHEQNFHGVG
     LATDVVEASA RALVHVMNLT CRADKVADYK QNMHKNRELG GV