ID   LEU1_SHEPW              Reviewed;         523 AA.
AC   B8CM39;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-MAR-2009, sequence version 1.
DT   25-MAY-2022, entry version 74.
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=swp_2213;
OS   Shewanella piezotolerans (strain WP3 / JCM 13877).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales;
OC   Shewanellaceae; Shewanella.
OX   NCBI_TaxID=225849;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=WP3 / JCM 13877;
RX   PubMed=18398463; DOI=10.1371/journal.pone.0001937;
RA   Wang F., Wang J., Jian H., Zhang B., Li S., Wang F., Zeng X., Gao L.,
RA   Bartlett D.H., Yu J., Hu S., Xiao X.;
RT   "Environmental adaptation: genomic analysis of the piezotolerant and
RT   psychrotolerant deep-sea iron reducing bacterium Shewanella piezotolerans
RT   WP3.";
RL   PLoS ONE 3:E1937-E1937(2008).
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; CP000472; ACJ28963.1; -; Genomic_DNA.
DR   RefSeq; WP_020912324.1; NC_011566.1.
DR   AlphaFoldDB; B8CM39; -.
DR   SMR; B8CM39; -.
DR   STRING; 225849.swp_2213; -.
DR   EnsemblBacteria; ACJ28963; ACJ28963; swp_2213.
DR   KEGG; swp:swp_2213; -.
DR   eggNOG; COG0119; Bacteria.
DR   HOGENOM; CLU_022158_0_1_6; -.
DR   OMA; NTMRMLV; -.
DR   OrthoDB; 840579at2; -.
DR   UniPathway; UPA00048; UER00070.
DR   Proteomes; UP000000753; 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..523
FT                   /note="2-isopropylmalate synthase"
FT                   /id="PRO_1000149288"
FT   DOMAIN          5..267
FT                   /note="Pyruvate carboxyltransferase"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01151"
SQ   SEQUENCE   523 AA;  56697 MW;  44D913CE2BBA1269 CRC64;
     MSDRVIIFDT TLRDGEQALA ASLTVKEKLQ IALALERLGV DVMEVGFPVS SPGDFESVQT
     IARTVKNSRV CALSRALEKD IDAAAQALSV ADQFRIHTFI STSTIHVESK LKRSFDQVLE
     MAVGAVKYAR RFTDDVEFSC EDAGRTPIDN LCRMVEEAIK AGARTINIPD TVGYTVPSEF
     GGIIQTLFNR VPNIDQAVIS VHCHDDLGLS VANSITAVQH GARQIECTVN GIGERAGNCS
     LEEIAMILST RKGELGLETG INAKEIHRTS SLVSQLCNMP VQANKAIVGA NAFTHSSGIH
     QDGMLKAQNT YEIMTPESIG LNRNNLNMTS RSGRHVIKHR MSELGYGDQD YDMDVLYEDF
     LVLADKKGQV FDYDLEALAF MEAQAEDDDH FKLQQLVVHS DSTEGSATAT VKVEVNGETV
     TEAAIGNGPV DAAYKAVARA SGCEIDITSY QLGAKGEGQN ALGQVDITAS YRNQNFHGVG
     LATDVVEASV KALVHVMNLT WRADKVADCK QKIQQEKQVL GGV