ID D4JT95_9FIRM Unreviewed; 558 AA.
AC D4JT95;
DT 18-MAY-2010, integrated into UniProtKB/TrEMBL.
DT 18-MAY-2010, sequence version 1.
DT 27-MAR-2024, entry version 74.
DE RecName: Full=2-isopropylmalate synthase {ECO:0000256|ARBA:ARBA00012973, ECO:0000256|HAMAP-Rule:MF_00572};
DE EC=2.3.3.13 {ECO:0000256|ARBA:ARBA00012973, ECO:0000256|HAMAP-Rule:MF_00572};
DE AltName: Full=Alpha-IPM synthase {ECO:0000256|HAMAP-Rule:MF_00572};
DE AltName: Full=Alpha-isopropylmalate synthase {ECO:0000256|HAMAP-Rule:MF_00572};
GN Name=leuA {ECO:0000256|HAMAP-Rule:MF_00572};
GN ORFNames=EUS_11260 {ECO:0000313|EMBL:CBK96314.1};
OS [Eubacterium] siraeum 70/3.
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Oscillospiraceae;
OC Oscillospiraceae incertae sedis.
OX NCBI_TaxID=657319 {ECO:0000313|EMBL:CBK96314.1, ECO:0000313|Proteomes:UP000008803};
RN [1] {ECO:0000313|EMBL:CBK96314.1, ECO:0000313|Proteomes:UP000008803}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=70/3 {ECO:0000313|EMBL:CBK96314.1,
RC ECO:0000313|Proteomes:UP000008803};
RG metaHIT consortium -- http://www.metahit.eu/;
RA Pajon A., Turner K., Parkhill J., Duncan S., Flint H.;
RT "The genome sequence of Eubacterium siraeum 70/3.";
RL Submitted (MAR-2010) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:CBK96314.1, ECO:0000313|Proteomes:UP000008803}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=70/3 {ECO:0000313|EMBL:CBK96314.1,
RC ECO:0000313|Proteomes:UP000008803};
RA Pajon A.;
RL Submitted (MAR-2010) 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-ketoisovalerate) to form 3-carboxy-3-
CC hydroxy-4-methylpentanoate (2-isopropylmalate). {ECO:0000256|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:0000256|ARBA:ARBA00000064, ECO:0000256|HAMAP-
CC Rule:MF_00572};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00572};
CC -!- PATHWAY: Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine
CC from 3-methyl-2-oxobutanoate: step 1/4. {ECO:0000256|ARBA:ARBA00004689,
CC ECO:0000256|HAMAP-Rule:MF_00572}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_00572}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00572}.
CC -!- SIMILARITY: Belongs to the alpha-IPM synthase/homocitrate synthase
CC family. LeuA type 2 subfamily. {ECO:0000256|ARBA:ARBA00009767,
CC ECO:0000256|HAMAP-Rule:MF_00572}.
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DR EMBL; FP929044; CBK96314.1; -; Genomic_DNA.
DR AlphaFoldDB; D4JT95; -.
DR KEGG; esu:EUS_11260; -.
DR PATRIC; fig|657319.3.peg.1410; -.
DR HOGENOM; CLU_004588_3_2_9; -.
DR UniPathway; UPA00048; UER00070.
DR Proteomes; UP000008803; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0003852; F:2-isopropylmalate synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0003985; F:acetyl-CoA C-acetyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0009098; P:leucine biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd07942; DRE_TIM_LeuA; 1.
DR Gene3D; 3.30.160.270; -; 1.
DR Gene3D; 3.20.20.70; Aldolase class I; 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 PANTHER; PTHR46911; -; 1.
DR PANTHER; PTHR46911:SF1; 2-ISOPROPYLMALATE SYNTHASE; 1.
DR Pfam; PF00682; HMGL-like; 1.
DR Pfam; PF08502; LeuA_dimer; 1.
DR SMART; SM00917; LeuA_dimer; 1.
DR SUPFAM; SSF110921; 2-isopropylmalate synthase LeuA, allosteric (dimerisation) domain; 1.
DR SUPFAM; SSF51569; Aldolase; 1.
DR SUPFAM; SSF89000; post-HMGL domain-like; 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 Acyltransferase {ECO:0000313|EMBL:CBK96314.1};
KW Amino-acid biosynthesis {ECO:0000256|HAMAP-Rule:MF_00572};
KW Branched-chain amino acid biosynthesis {ECO:0000256|ARBA:ARBA00023304,
KW ECO:0000256|HAMAP-Rule:MF_00572};
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00572};
KW Leucine biosynthesis {ECO:0000256|HAMAP-Rule:MF_00572};
KW Magnesium {ECO:0000256|HAMAP-Rule:MF_00572};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_00572};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00572}.
FT DOMAIN 34..307
FT /note="Pyruvate carboxyltransferase"
FT /evidence="ECO:0000259|PROSITE:PS50991"
FT REGION 442..558
FT /note="Regulatory domain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 43
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 246
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 248
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 282
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
SQ SEQUENCE 558 AA; 62217 MW; A0393E2C2307A2F4 CRC64;
MKGTMNTNKY SRGYFMPPVQ CLDWTKKEYI DKAPIWCSVD LRDGNQALIV PMNLEEKLEF
FKVLVAIGFK EIEIGFPAAS ETEYEFCRAL IEQDLIPDDV TIQVLTQSRE HIIKKTFEAL
AGAKHAVVHL YNSTSVTQRE QVFRKPKNEI IDIAVEGAKL LKEYREKTPG DFKFEYSPES
FTGTEPEFAL EICNAVLDVW QPTPDDKVII NLPVTVEMSL PHVYASQVEY MCKNMVNREN
VIVSLHPHND RGCAVADSEL GLLAGADRIE GTLFGNGERT GNVDIVTLAL NMYSHGVDPK
LDFSDLPSIT EVYEKMTCMK VYDRQPYSGS LVFAAFSGSH QDAIAKGMKW REEKDPEHWT
VPYLPIDPMD IGRQYDGDVI RINSQSGKGG IGYLLQQKYG VDLPKKFREK VGYTVKSVSD
HQHKELTPDE VYEVFRSNFV NKETALKITE AHYKQENGGI TATVTADYKG STAVYTGSGN
GRLDAVSDAI KNGLGLSYSL VTYNEHAIEV GSKSKAAAYV EICDKNGNSF WGAGIHTDII
NSSVSALVSA INNSDMVK
//
