ID   LEUC_ACTSZ              Reviewed;         469 AA.
AC   A6VQL0;
DT   26-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-AUG-2007, sequence version 1.
DT   03-AUG-2022, entry version 85.
DE   RecName: Full=3-isopropylmalate dehydratase large subunit {ECO:0000255|HAMAP-Rule:MF_01026};
DE            EC=4.2.1.33 {ECO:0000255|HAMAP-Rule:MF_01026};
DE   AltName: Full=Alpha-IPM isomerase {ECO:0000255|HAMAP-Rule:MF_01026};
DE            Short=IPMI {ECO:0000255|HAMAP-Rule:MF_01026};
DE   AltName: Full=Isopropylmalate isomerase {ECO:0000255|HAMAP-Rule:MF_01026};
GN   Name=leuC {ECO:0000255|HAMAP-Rule:MF_01026}; OrderedLocusNames=Asuc_1909;
OS   Actinobacillus succinogenes (strain ATCC 55618 / DSM 22257 / CCUG 43843 /
OS   130Z).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC   Pasteurellaceae; Actinobacillus.
OX   NCBI_TaxID=339671;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 55618 / DSM 22257 / CCUG 43843 / 130Z;
RX   PubMed=21118570; DOI=10.1186/1471-2164-11-680;
RA   McKinlay J.B., Laivenieks M., Schindler B.D., McKinlay A.A.,
RA   Siddaramappa S., Challacombe J.F., Lowry S.R., Clum A., Lapidus A.L.,
RA   Burkhart K.B., Harkins V., Vieille C.;
RT   "A genomic perspective on the potential of Actinobacillus succinogenes for
RT   industrial succinate production.";
RL   BMC Genomics 11:680-680(2010).
CC   -!- FUNCTION: Catalyzes the isomerization between 2-isopropylmalate and 3-
CC       isopropylmalate, via the formation of 2-isopropylmaleate.
CC       {ECO:0000255|HAMAP-Rule:MF_01026}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(2R,3S)-3-isopropylmalate = (2S)-2-isopropylmalate;
CC         Xref=Rhea:RHEA:32287, ChEBI:CHEBI:1178, ChEBI:CHEBI:35121;
CC         EC=4.2.1.33; Evidence={ECO:0000255|HAMAP-Rule:MF_01026};
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01026};
CC       Note=Binds 1 [4Fe-4S] cluster per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_01026};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine
CC       from 3-methyl-2-oxobutanoate: step 2/4. {ECO:0000255|HAMAP-
CC       Rule:MF_01026}.
CC   -!- SUBUNIT: Heterodimer of LeuC and LeuD. {ECO:0000255|HAMAP-
CC       Rule:MF_01026}.
CC   -!- SIMILARITY: Belongs to the aconitase/IPM isomerase family. LeuC type 1
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_01026}.
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DR   EMBL; CP000746; ABR75257.1; -; Genomic_DNA.
DR   RefSeq; WP_012073634.1; NC_009655.1.
DR   AlphaFoldDB; A6VQL0; -.
DR   SMR; A6VQL0; -.
DR   STRING; 339671.Asuc_1909; -.
DR   EnsemblBacteria; ABR75257; ABR75257; Asuc_1909.
DR   KEGG; asu:Asuc_1909; -.
DR   eggNOG; COG0065; Bacteria.
DR   HOGENOM; CLU_006714_3_4_6; -.
DR   OMA; CNMSIEM; -.
DR   OrthoDB; 749418at2; -.
DR   UniPathway; UPA00048; UER00071.
DR   Proteomes; UP000001114; Chromosome.
DR   GO; GO:0003861; F:3-isopropylmalate dehydratase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0009098; P:leucine biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd01583; IPMI; 1.
DR   Gene3D; 3.30.499.10; -; 2.
DR   HAMAP; MF_01026; LeuC_type1; 1.
DR   InterPro; IPR004430; 3-IsopropMal_deHydase_lsu.
DR   InterPro; IPR015931; Acnase/IPM_dHydase_lsu_aba_1/3.
DR   InterPro; IPR001030; Acoase/IPM_deHydtase_lsu_aba.
DR   InterPro; IPR018136; Aconitase_4Fe-4S_BS.
DR   InterPro; IPR036008; Aconitase_4Fe-4S_dom.
DR   InterPro; IPR033941; IPMI_cat.
DR   Pfam; PF00330; Aconitase; 1.
DR   PRINTS; PR00415; ACONITASE.
DR   SUPFAM; SSF53732; SSF53732; 1.
DR   TIGRFAMs; TIGR00170; leuC; 1.
DR   PROSITE; PS00450; ACONITASE_1; 1.
DR   PROSITE; PS01244; ACONITASE_2; 1.
PE   3: Inferred from homology;
KW   4Fe-4S; Amino-acid biosynthesis; Branched-chain amino acid biosynthesis;
KW   Iron; Iron-sulfur; Leucine biosynthesis; Lyase; Metal-binding;
KW   Reference proteome.
FT   CHAIN           1..469
FT                   /note="3-isopropylmalate dehydratase large subunit"
FT                   /id="PRO_1000072946"
FT   BINDING         347
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01026"
FT   BINDING         408
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01026"
FT   BINDING         411
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01026"
SQ   SEQUENCE   469 AA;  50903 MW;  1FB91A1C5C56E11E CRC64;
     MGKTLYQKLF DAHVVYEAEG ETPILYINRH LIHEVTSPQA FDGLRVAGRQ VRQVNKTFGT
     MDHSISTQVR DVNLLEGQAK IQVLELDKNC KATGIELFDM NTKQQGIVHV MGPEQGLTLP
     GMTIVCGDSH TATHGAFGAL AFGIGTSEVE HVLATQTLKQ ARAKNMKVEV RGKVNPGITA
     KDIVLAIIGK TTMAGGTGHV VEFCGEAIRD LSMEGRMTVC NMAIEFGAKA GLIAPDETTF
     EYLKDRPHAP KGKDWDDAIE YWKTLKSDDD AQFDTVVVLE AKDIAPQVTW GTNPGQVIAI
     DQLVPNPAEM SDPVTKTSAE KALAYIGLQA NTDLKDVPVD QVFIGSCTNS RIEDLRAAAA
     VMKGRKKADN VKRVLVVPGS GLVKEQAEKE GLDKIFIAAG AEWRNPGCSM CLGMNDDRLG
     EWERCASTSN RNFEGRQGRN GRTHLVSPAM AAAAAVFGKF VDIRTIKLN