ID A0A1T5F166_9FIRM Unreviewed; 663 AA.
AC A0A1T5F166;
DT 10-MAY-2017, integrated into UniProtKB/TrEMBL.
DT 10-MAY-2017, sequence version 1.
DT 27-MAR-2024, entry version 29.
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=SAMN06296386_10894 {ECO:0000313|EMBL:SKB89915.1};
OS Lachnospiraceae bacterium.
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Lachnospiraceae.
OX NCBI_TaxID=1898203 {ECO:0000313|EMBL:SKB89915.1, ECO:0000313|Proteomes:UP000191179};
RN [1] {ECO:0000313|EMBL:SKB89915.1, ECO:0000313|Proteomes:UP000191179}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=KH1P17 {ECO:0000313|EMBL:SKB89915.1,
RC ECO:0000313|Proteomes:UP000191179};
RA Peterson S.W.;
RL Submitted (FEB-2017) 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; FUZG01000008; SKB89915.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1T5F166; -.
DR OrthoDB; 9804858at2; -.
DR UniPathway; UPA00048; UER00070.
DR Proteomes; UP000191179; Unassembled WGS sequence.
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 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}; Reference proteome {ECO:0000313|Proteomes:UP000191179};
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..663
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 663 AA; 74968 MW; 77447C7FB9DDAAEB CRC64;
MYDGNKYAIQ YFMPEKPTYN WVKKDHITKA PIWCSVDLRD GNQALIEPMG LDEKLEFFQM
LVDIGFKEIE IGFPAASDTE YQFARTLIER NMVPEDVTLQ VLTQAREHII RKTFEAVKGA
PHAIIHLYNS TSVAQREQVF KKNKEDIKNI AVEGAKLLKQ LADETKGNFS FEYSPESFPG
TEVEYAIDVC NAVLDVWKPK PDKKVIINIP TTVENAMPHV FATQVECISN NLKYREAVTL
SLHPHNDRGC GVSDAELGLL AGADRIEGTL FGNGERTGNV DIITLAMNMF THGVDSKLDF
SHINEIGNVF ERLTRMEIPA RQPYAGQLVF TAFSGSHQDA IAKGFAWRKA HLDRPWSVPY
LPVDPKDLGR EYDGDVIRIN SQSGKGGVSF ILKQNYGLQI PKIMQEDVGY TVKGISDREH
AELSPDRVYH IFEDKYIHNE GVFTIKECHF EQVDGILVKA TITRNGKDVV VAANGNGRLD
AVSNAIKSYF DISYELTTYE EHALSHGSSS KACTYVGITA NGKHYWGVGI DEDIITSSIH
ALIVAVNQME AIRDNKNDKD QRITEIVNYI QENYLSVTLD DLSREFFLSK PYLSKYIKEK
SGATFSENVQ KIRLKKACTL LRNGNMKVEK VAENVGYPSV EHFNRQFKKR YGMTPVQYRN
SKR
//
