ID   LEU1_FRASN              Reviewed;         565 AA.
AC   A8L551;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   04-DEC-2007, sequence version 1.
DT   03-AUG-2022, entry version 81.
DE   RecName: Full=2-isopropylmalate synthase {ECO:0000255|HAMAP-Rule:MF_00572};
DE            EC=2.3.3.13 {ECO:0000255|HAMAP-Rule:MF_00572};
DE   AltName: Full=Alpha-IPM synthase {ECO:0000255|HAMAP-Rule:MF_00572};
DE   AltName: Full=Alpha-isopropylmalate synthase {ECO:0000255|HAMAP-Rule:MF_00572};
GN   Name=leuA {ECO:0000255|HAMAP-Rule:MF_00572};
GN   OrderedLocusNames=Franean1_1095;
OS   Frankia sp. (strain EAN1pec).
OC   Bacteria; Actinobacteria; Frankiales; Frankiaceae; Frankia;
OC   unclassified Frankia.
OX   NCBI_TaxID=298653;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=EAN1pec;
RX   PubMed=17151343; DOI=10.1101/gr.5798407;
RA   Normand P., Lapierre P., Tisa L.S., Gogarten J.P., Alloisio N.,
RA   Bagnarol E., Bassi C.A., Berry A.M., Bickhart D.M., Choisne N., Couloux A.,
RA   Cournoyer B., Cruveiller S., Daubin V., Demange N., Francino M.P.,
RA   Goltsman E., Huang Y., Kopp O.R., Labarre L., Lapidus A., Lavire C.,
RA   Marechal J., Martinez M., Mastronunzio J.E., Mullin B.C., Niemann J.,
RA   Pujic P., Rawnsley T., Rouy Z., Schenowitz C., Sellstedt A., Tavares F.,
RA   Tomkins J.P., Vallenet D., Valverde C., Wall L.G., Wang Y., Medigue C.,
RA   Benson D.R.;
RT   "Genome characteristics of facultatively symbiotic Frankia sp. strains
RT   reflect host range and host plant biogeography.";
RL   Genome Res. 17:7-15(2007).
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_00572}.
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_00572};
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_00572}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000255|HAMAP-Rule:MF_00572}.
CC   -!- SIMILARITY: Belongs to the alpha-IPM synthase/homocitrate synthase
CC       family. LeuA type 2 subfamily. {ECO:0000255|HAMAP-Rule:MF_00572}.
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DR   EMBL; CP000820; ABW10551.1; -; Genomic_DNA.
DR   RefSeq; WP_020458732.1; NC_009921.1.
DR   AlphaFoldDB; A8L551; -.
DR   SMR; A8L551; -.
DR   STRING; 298653.Franean1_1095; -.
DR   EnsemblBacteria; ABW10551; ABW10551; Franean1_1095.
DR   KEGG; fre:Franean1_1095; -.
DR   eggNOG; COG0119; Bacteria.
DR   HOGENOM; CLU_004588_3_0_11; -.
DR   OMA; WPDKVID; -.
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   CDD; cd07942; DRE_TIM_LeuA; 1.
DR   Gene3D; 3.20.20.70; -; 1.
DR   Gene3D; 3.30.160.270; -; 1.
DR   HAMAP; MF_00572; LeuA_type2; 1.
DR   InterPro; IPR013709; 2-isopropylmalate_synth_dimer.
DR   InterPro; IPR002034; AIPM/Hcit_synth_CS.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR005668; IPM_Synthase.
DR   InterPro; IPR036230; LeuA_allosteric_dom_sf.
DR   InterPro; IPR039371; LeuA_N_DRE-TIM.
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; TIGR00970; leuA_yeast; 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..565
FT                   /note="2-isopropylmalate synthase"
FT                   /id="PRO_1000129505"
FT   DOMAIN          37..312
FT                   /note="Pyruvate carboxyltransferase"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01151"
SQ   SEQUENCE   565 AA;  61634 MW;  35E046B0A719C311 CRC64;
     MITPQQPSGM PIEKYRPFPA VALPDRTWPN ATITEAPRWC SVDLRDGNQA LIDPMTPSRK
     MQLFELLVAM GYKEIEVGFP AASQTDFDFV RQLIEDDLIP DDVTIQVLTQ AREELIERTV
     TSLVGSDRAL IHLYNSTSTL QRRVVFGLDR AGVTDIAVQG ARWCAQYAEK LLEGTDVRWQ
     YSPESFTGTE LDYALEVCEA VMDVWAPTPD NPVVLNLPAT VEMSTPNVYA DQIEWMSRNL
     TRRDAVVLSL HPHNDRGCAV AAAELGVMAG ADRVEGCLFG NGERTGNVCL VTLGMNLFSQ
     GIDPMIDLSD IDGVRRTVEY CNQLPVHPRH PYGGDLVYTA FSGSHQDAIK KGFEAMERTG
     QTLWEVPYLP IDPKDVGRSY EAVIRVNSQS GKGGVAYLMK SEYALDLPRR LQIEFSGVVQ
     KHTDDAGGEV TAGQLWEIFT REYRPEGGDP AASLELLGSR TTAASGARDE VTVSVRLDGT
     ETVITGSGNG PIDAFVAALS ERGVPVRVLD YNEHALGSGA DARAAAYLEV AVGETVLWGV
     GIDPNIVTAS LRAVVSAVNR ASRES