ID   LEU1_SODGM              Reviewed;         525 AA.
AC   Q2NVW3;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   07-FEB-2006, sequence version 1.
DT   03-AUG-2022, entry version 97.
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=SG0437;
OS   Sodalis glossinidius (strain morsitans).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Bruguierivoracaceae; Sodalis.
OX   NCBI_TaxID=343509;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=morsitans;
RX   PubMed=16365377; DOI=10.1101/gr.4106106;
RA   Toh H., Weiss B.L., Perkin S.A.H., Yamashita A., Oshima K., Hattori M.,
RA   Aksoy S.;
RT   "Massive genome erosion and functional adaptations provide insights into
RT   the symbiotic lifestyle of Sodalis glossinidius in the tsetse host.";
RL   Genome Res. 16:149-156(2006).
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; AP008232; BAE73712.1; -; Genomic_DNA.
DR   RefSeq; WP_011410410.1; NC_007712.1.
DR   AlphaFoldDB; Q2NVW3; -.
DR   SMR; Q2NVW3; -.
DR   STRING; 343509.SG0437; -.
DR   EnsemblBacteria; BAE73712; BAE73712; SG0437.
DR   KEGG; sgl:SG0437; -.
DR   eggNOG; COG0119; Bacteria.
DR   HOGENOM; CLU_022158_0_1_6; -.
DR   OMA; NTMRMLV; -.
DR   OrthoDB; 840579at2; -.
DR   BioCyc; SGLO343509:SGP1_RS03950-MON; -.
DR   UniPathway; UPA00048; UER00070.
DR   Proteomes; UP000001932; 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..525
FT                   /note="2-isopropylmalate synthase"
FT                   /id="PRO_1000149300"
FT   DOMAIN          5..267
FT                   /note="Pyruvate carboxyltransferase"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01151"
SQ   SEQUENCE   525 AA;  57869 MW;  27C134A919F388AA CRC64;
     MSQQVIIFDT TLRDGEQALQ ASLSVKEKLQ VAQALERMGV DVMEVGFPVS SPGDFESVQT
     IARQIKNSRV CGLARCVDRD IDVAAEALRV AEAFRIHLFL ATSTLHVESK LKKSFDQVVE
     MAVHSVKRAR NYTDDVEFSC EDAGRTPIDN LCRIVEATIK AGARTINIPD TVGYTTPNQF
     GGIISSLYQH VPNIDKAIIS VHCHDDLGMA VGNSIAAIQS GARQVEGTLN GIGERAGNTA
     LEEVIMAIKV RQDLLNVHTG IHHQEIYRTS QVVSQLCNMP IPANKAVVGA NAFAHSSGIH
     QDGVLKNRQN YEIMTPEIIG LKEVQLNLTS RSGRAAVKHR MQEMGYQESN YSLDELYDAF
     LKLADKKGQV FDYDLEALAF INNQQEQSEH FRLEYFSVQS SSADIATASV KLAFGDEVHA
     EAATGNGPVD AVYEALNRIT QLPIQLEKYQ LTAKGHGRDA LGQVDIVVEY EGRRFHGVGL
     ATDIIESSAL AMVNSMNTIW RARQVGIELR RLHQHNNSQD MQETV