ID K9EBB7_9ACTO Unreviewed; 583 AA.
AC K9EBB7;
DT 06-FEB-2013, integrated into UniProtKB/TrEMBL.
DT 06-FEB-2013, sequence version 1.
DT 27-MAR-2024, entry version 53.
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=HMPREF9233_01511 {ECO:0000313|EMBL:EKU94564.1};
OS Actinobaculum massiliense ACS-171-V-Col2.
OC Bacteria; Actinomycetota; Actinomycetes; Actinomycetales; Actinomycetaceae;
OC Actinobaculum.
OX NCBI_TaxID=883066 {ECO:0000313|EMBL:EKU94564.1, ECO:0000313|Proteomes:UP000009888};
RN [1] {ECO:0000313|EMBL:EKU94564.1, ECO:0000313|Proteomes:UP000009888}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ACS-171-V-Col2 {ECO:0000313|Proteomes:UP000009888};
RG The Broad Institute Genome Sequencing Platform;
RA Earl A., Ward D., Feldgarden M., Gevers D., Saerens B., Vaneechoutte M.,
RA Walker B., Young S.K., Zeng Q., Gargeya S., Fitzgerald M., Haas B.,
RA Abouelleil A., Alvarado L., Arachchi H.M., Berlin A., Chapman S.B.,
RA Goldberg J., Griggs A., Gujja S., Hansen M., Howarth C., Imamovic A.,
RA Larimer J., McCowen C., Montmayeur A., Murphy C., Neiman D., Pearson M.,
RA Priest M., Roberts A., Saif S., Shea T., Sisk P., Sykes S., Wortman J.,
RA Nusbaum C., Birren B.;
RT "The Genome Sequence of Actinobaculum massiliae ACS-171-V-COL2.";
RL Submitted (SEP-2012) 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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EKU94564.1}.
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DR EMBL; AGWL01000008; EKU94564.1; -; Genomic_DNA.
DR RefSeq; WP_007001716.1; NZ_JH992956.1.
DR AlphaFoldDB; K9EBB7; -.
DR STRING; 202789.GCA_001457435_00594; -.
DR PATRIC; fig|883066.3.peg.1574; -.
DR eggNOG; COG0119; Bacteria.
DR HOGENOM; CLU_004588_3_0_11; -.
DR UniPathway; UPA00048; UER00070.
DR Proteomes; UP000009888; 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: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 NCBIfam; TIGR00970; leuA_yeast; 1.
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 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}; Reference proteome {ECO:0000313|Proteomes:UP000009888};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00572}.
FT DOMAIN 45..321
FT /note="Pyruvate carboxyltransferase"
FT /evidence="ECO:0000259|PROSITE:PS50991"
FT REGION 461..583
FT /note="Regulatory domain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 54
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 260
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 262
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
FT BINDING 296
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00572"
SQ SEQUENCE 583 AA; 64727 MW; 462F4FCCE49DF7F9 CRC64;
MKTEGCANRQ QPSGMPYQKY RHFLDAHRIA LPDRQWPNNR LTRAPRWLST DLRDGNQALT
EPMSPSRKRK MFEQLVRIGF KEIEIGFPAA SHTEWEFVRS LAQTGAVPED VTVSVLTQAR
PDMIHRTIDA IAGLPRATVH LYTATAPAFR QLVFNTDRAG VKALAVQGAH EVTSYLEKTA
LEGGVVGFEY SPEIFVDTEL DYALEICEAV MDAWQPGPER EMIINLPTTV ERSTPNVYAD
QVEWMSRNLS RREYICLSAH NHNDRGTAVA TAELAMLAGI ERVEGCLFGQ GERTGNVDLV
TLAMNLYSQG IDPQLDLSNI DQIIRTSEYC NQMEVPPRTP YAGALVYTSF SGSHQDAIKK
GMEARALRVA QGGEAATVWN VPYLPIDPRD VGRTYDAVVR VNSQSGKGGV AYLLKTSHRM
ELPRRMQMEF SRIVKTFTDR AGTAISANQL WSIFQDEYLP SDEAERRWGR YALRDMKFVH
RQAGASELSA VLEIQASGEQ LRLDAEGNGP IAAFVTAMNG IGEDVHILDY QEHALGEGKD
APAAAYVECD VNGQVLWGCG IHTSTTRAAL KAIVSAMNRA HRA
//
