ID D4M638_9FIRM Unreviewed; 662 AA.
AC D4M638;
DT 18-MAY-2010, integrated into UniProtKB/TrEMBL.
DT 18-MAY-2010, sequence version 1.
DT 27-MAR-2024, entry version 85.
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=RTO_21930 {ECO:0000313|EMBL:CBL26700.1};
OS [Ruminococcus] torques L2-14.
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Lachnospiraceae;
OC Mediterraneibacter.
OX NCBI_TaxID=657313 {ECO:0000313|EMBL:CBL26700.1, ECO:0000313|Proteomes:UP000008956};
RN [1] {ECO:0000313|EMBL:CBL26700.1, ECO:0000313|Proteomes:UP000008956}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=L2-14 {ECO:0000313|EMBL:CBL26700.1,
RC ECO:0000313|Proteomes:UP000008956};
RG metaHIT consortium -- http://www.metahit.eu/;
RA Pajon A., Turner K., Parkhill J., Duncan S., Flint H.;
RT "The genome sequence of Ruminococcus torques L2-14.";
RL Submitted (MAR-2010) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:CBL26700.1, ECO:0000313|Proteomes:UP000008956}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=L2-14 {ECO:0000313|EMBL:CBL26700.1,
RC ECO:0000313|Proteomes:UP000008956};
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; FP929055; CBL26700.1; -; Genomic_DNA.
DR AlphaFoldDB; D4M638; -.
DR STRING; 33039.ERS852502_01671; -.
DR KEGG; rto:RTO_21930; -.
DR PATRIC; fig|657313.3.peg.2089; -.
DR HOGENOM; CLU_004588_3_2_9; -.
DR UniPathway; UPA00048; UER00070.
DR Proteomes; UP000008956; 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:0003700; F:DNA-binding transcription factor activity; IEA:InterPro.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0043565; F:sequence-specific DNA binding; IEA:InterPro.
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 Gene3D; 1.10.10.60; Homeodomain-like; 2.
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; IPR009057; Homeobox-like_sf.
DR InterPro; IPR018060; HTH_AraC.
DR InterPro; IPR018062; HTH_AraC-typ_CS.
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 InterPro; IPR020449; Tscrpt_reg_HTH_AraC-type.
DR PANTHER; PTHR46911; -; 1.
DR PANTHER; PTHR46911:SF1; 2-ISOPROPYLMALATE SYNTHASE; 1.
DR Pfam; PF00682; HMGL-like; 1.
DR Pfam; PF12833; HTH_18; 1.
DR Pfam; PF08502; LeuA_dimer; 1.
DR PRINTS; PR00032; HTHARAC.
DR SMART; SM00342; HTH_ARAC; 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; SSF46689; Homeodomain-like; 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; PS00041; HTH_ARAC_FAMILY_1; 1.
DR PROSITE; PS01124; HTH_ARAC_FAMILY_2; 1.
DR PROSITE; PS50991; PYR_CT; 1.
PE 3: Inferred from homology;
KW Acyltransferase {ECO:0000313|EMBL:CBL26700.1};
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 DNA-binding {ECO:0000256|ARBA:ARBA00023125};
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 31..304
FT /note="Pyruvate carboxyltransferase"
FT /evidence="ECO:0000259|PROSITE:PS50991"
FT DOMAIN 564..661
FT /note="HTH araC/xylS-type"
FT /evidence="ECO:0000259|PROSITE:PS01124"
FT REGION 439..662
FT /note="Regulatory domain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 40
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 243
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 245
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 279
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
SQ SEQUENCE 662 AA; 75107 MW; 6D03EA247F850502 CRC64;
MENWRKYEKT YFMPPEPCYD WVKKDSIDKA PIWCSVDLRD GNQALIEPMS LDEKLEFFQL
LVDVGFKMIE VGFPAASETE YQFLRTLIEQ NMIPDDVTIQ VLTQAREHII RKTFDAVKGA
PHAIIHVYNS TSVAQREQVF KKDKEQVKQI AIDGAKLLKE LAEETDGNFT FQYSPESFQG
TEVDYALEVC NAVLEIWQPT ADNKAIINLP TTVENAMPHV FASQVEYFNK HLRDRENVIL
SLHPHNDRGS GVSDAELGIL AGADKIEGTL FGNGERTGNV DIITLAMNMF SQGVNPGLDF
SNMSDICEIY ERVTRMKVSP RQPYAGDLVF TAFSGSHQDA IAKGMTWREE HDCQTWTVPY
LPIDPQDVGR RYDSDVIRIN SQSGKGGVNY ILKQSFGISL PEKMREEVGY LVKDVSDKAH
EELTPDNVYH IFEDHYINAK PIFSVDECHF KQEDGIVAEA TIHHNGSNRK ITGVGNGRLD
AVSNAIKHYF DIEFELAFYE EHSLTKGSSS RAVAYVGVIS NKKRYWGVGV DADIIKASIE
ALVVAVNKLD SVQRSQTCKD ERLLDITNYI YANYKEVTLD DLAEKFFLSK PYLSKYIKEK
SGMTFGDILK EIRMKKARAM LKSSSATVES IAESVGYQNV EHFNRTFKKL YNITPVQYRN
KP
//
