LEU1_VARPS
ID LEU1_VARPS Reviewed; 512 AA.
AC C5CYP2;
DT 22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT 28-JUL-2009, sequence version 1.
DT 25-MAY-2022, entry version 68.
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=Vapar_2374;
OS Variovorax paradoxus (strain S110).
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC Comamonadaceae; Variovorax.
OX NCBI_TaxID=543728;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=S110;
RX PubMed=21183664; DOI=10.1128/jb.00925-10;
RA Han J.I., Choi H.K., Lee S.W., Orwin P.M., Kim J., Laroe S.L., Kim T.G.,
RA O'Neil J., Leadbetter J.R., Lee S.Y., Hur C.G., Spain J.C.,
RA Ovchinnikova G., Goodwin L., Han C.;
RT "Complete genome sequence of the metabolically versatile plant growth-
RT promoting endophyte, Variovorax paradoxus S110.";
RL J. Bacteriol. 193:1183-1190(2011).
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; CP001635; ACS19001.1; -; Genomic_DNA.
DR RefSeq; WP_012747484.1; NC_012791.1.
DR AlphaFoldDB; C5CYP2; -.
DR SMR; C5CYP2; -.
DR STRING; 543728.Vapar_2374; -.
DR EnsemblBacteria; ACS19001; ACS19001; Vapar_2374.
DR GeneID; 45056653; -.
DR KEGG; vap:Vapar_2374; -.
DR eggNOG; COG0119; Bacteria.
DR HOGENOM; CLU_022158_0_1_4; -.
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..512
FT /note="2-isopropylmalate synthase"
FT /id="PRO_1000213324"
FT DOMAIN 5..268
FT /note="Pyruvate carboxyltransferase"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01151"
SQ SEQUENCE 512 AA; 55291 MW; 36C3773EC8C4D39C CRC64;
MTDQLIIFDT TLRDGEQSPG ASMTRDEKMR IAKQLERLKV DVIEAGFPAS SNGDFEAVKA
IADIIKESTV CGLSRANDRD ISRAAEALKG AARGRIHTFI ATSPLHMEKK LRMSPDEVHE
QAKLAVRFAR NLVSDVEFSP EDGYRSDPDF LCRVLETVIN EGATTINVPD TVGYAIPELY
GNFIKMLRER VPNSDKAIWS VHCHNDLGMA VANSLAGVKI GGARQVECTI NGLGERAGNC
SLEEVVMAVK TRRDYFGLDL NIDTTHIVAA SRMVSQTTGF VVQPNKAVVG ANAFAHASGI
HQDGVLKARD TYEIMRAEDV GWAANKIVLG KLSGRNAFKQ RLQELGVTMA SEADINAAFL
RFKELADRKS EIFDEDILAL VSAEEHSNVD EQFAFVSLSQ HSETGERPQA KVVFTVQGKE
VTGESDGNGP VDASLKAIES HVKSGAEMVL YSVNAISGST ESQGEVTVRL QNAGRVVNGV
GADPDIVVAS AKAYLSALNK LQSQAEKVAA QG