ID   LEU1_BURVG              Reviewed;         514 AA.
AC   A4JGE0;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-2007, sequence version 1.
DT   03-AUG-2022, entry version 95.
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=Bcep1808_2344;
OS   Burkholderia vietnamiensis (strain G4 / LMG 22486) (Burkholderia cepacia
OS   (strain R1808)).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC   Burkholderiaceae; Burkholderia; Burkholderia cepacia complex.
OX   NCBI_TaxID=269482;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=G4 / LMG 22486;
RG   US DOE Joint Genome Institute;
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   Chain P., Malfatti S., Shin M., Vergez L., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Tiedje J., Richardson P.;
RT   "Complete sequence of chromosome 1 of Burkholderia vietnamiensis G4.";
RL   Submitted (MAR-2007) 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; CP000614; ABO55343.1; -; Genomic_DNA.
DR   AlphaFoldDB; A4JGE0; -.
DR   SMR; A4JGE0; -.
DR   STRING; 269482.Bcep1808_2344; -.
DR   EnsemblBacteria; ABO55343; ABO55343; Bcep1808_2344.
DR   KEGG; bvi:Bcep1808_2344; -.
DR   eggNOG; COG0119; Bacteria.
DR   HOGENOM; CLU_022158_0_1_4; -.
DR   OMA; NTMRMLV; -.
DR   UniPathway; UPA00048; UER00070.
DR   Proteomes; UP000002287; Chromosome 1.
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; Reference proteome; Transferase.
FT   CHAIN           1..514
FT                   /note="2-isopropylmalate synthase"
FT                   /id="PRO_1000149157"
FT   DOMAIN          5..268
FT                   /note="Pyruvate carboxyltransferase"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01151"
SQ   SEQUENCE   514 AA;  55369 MW;  91387F75340E5260 CRC64;
     MTDKLIIFDT TLRDGEQSPG ASMTKEEKIR IAKHLERMKV DVIEAGFAAS SNGDFDAIHT
     IAGLVKDSTI CSLARANDKD IQRAADALKP ASSARIHTFI ATSPLHMEKK LRMTPDQVFE
     QARLAVRFAR KFTDNVEFSP EDGSRSDLDF LCRVLEAVIA EGATTINIAD TVGYGVPELY
     GNLVKTLRER IPNSDKAIFS VHCHNDLGMA VANSLAGVKI GGARQVECTI NGLGERAGNT
     SLEEIVMAVK TRKDYFGLDV GIDTTQIVPT SKLVSQITGF VVQPNKAVVG ANAFAHASGI
     HQDGVLKARD TYEIMRAEDV GWTANKIVLG KLSGRNAFKQ RLQELGVSLD SEAELNAAFM
     RFKDLADRKA EIFDEDIIAI VSEESALAQE QEHVKFVSLS QHSETGEQPQ AKVVFAVEGS
     EVTGEARGNG PVDATFNAIE GEVGSGSELL LYSVNAITTG TQAQGEVTVR LSKNGRIVNG
     VGTDPDIVAA SAKAYIAALN KLHSKDDKLN PQRA