ID   LEUD_COREF              Reviewed;         196 AA.
AC   Q8FPR2;
DT   10-JAN-2006, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2003, sequence version 1.
DT   25-MAY-2022, entry version 102.
DE   RecName: Full=3-isopropylmalate dehydratase small subunit {ECO:0000255|HAMAP-Rule:MF_01031};
DE            EC=4.2.1.33 {ECO:0000255|HAMAP-Rule:MF_01031};
DE   AltName: Full=Alpha-IPM isomerase {ECO:0000255|HAMAP-Rule:MF_01031};
DE            Short=IPMI {ECO:0000255|HAMAP-Rule:MF_01031};
DE   AltName: Full=Isopropylmalate isomerase {ECO:0000255|HAMAP-Rule:MF_01031};
GN   Name=leuD {ECO:0000255|HAMAP-Rule:MF_01031}; OrderedLocusNames=CE1428;
OS   Corynebacterium efficiens (strain DSM 44549 / YS-314 / AJ 12310 / JCM 11189
OS   / NBRC 100395).
OC   Bacteria; Actinobacteria; Corynebacteriales; Corynebacteriaceae;
OC   Corynebacterium.
OX   NCBI_TaxID=196164;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 44549 / YS-314 / AJ 12310 / JCM 11189 / NBRC 100395;
RX   PubMed=12840036; DOI=10.1101/gr.1285603;
RA   Nishio Y., Nakamura Y., Kawarabayasi Y., Usuda Y., Kimura E., Sugimoto S.,
RA   Matsui K., Yamagishi A., Kikuchi H., Ikeo K., Gojobori T.;
RT   "Comparative complete genome sequence analysis of the amino acid
RT   replacements responsible for the thermostability of Corynebacterium
RT   efficiens.";
RL   Genome Res. 13:1572-1579(2003).
CC   -!- FUNCTION: Catalyzes the isomerization between 2-isopropylmalate and 3-
CC       isopropylmalate, via the formation of 2-isopropylmaleate.
CC       {ECO:0000255|HAMAP-Rule:MF_01031}.
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_01031};
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_01031}.
CC   -!- SUBUNIT: Heterodimer of LeuC and LeuD. {ECO:0000255|HAMAP-
CC       Rule:MF_01031}.
CC   -!- SIMILARITY: Belongs to the LeuD family. LeuD type 1 subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01031}.
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DR   EMBL; BA000035; BAC18238.1; -; Genomic_DNA.
DR   RefSeq; WP_006769391.1; NZ_GG700686.1.
DR   AlphaFoldDB; Q8FPR2; -.
DR   SMR; Q8FPR2; -.
DR   STRING; 196164.23493267; -.
DR   EnsemblBacteria; BAC18238; BAC18238; BAC18238.
DR   KEGG; cef:CE1428; -.
DR   eggNOG; COG0066; Bacteria.
DR   HOGENOM; CLU_081378_0_1_11; -.
DR   OMA; AFTTHTG; -.
DR   OrthoDB; 1384217at2; -.
DR   UniPathway; UPA00048; UER00071.
DR   Proteomes; UP000001409; Chromosome.
DR   GO; GO:0009316; C:3-isopropylmalate dehydratase complex; IEA:InterPro.
DR   GO; GO:0003861; F:3-isopropylmalate dehydratase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009098; P:leucine biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd01577; IPMI_Swivel; 1.
DR   Gene3D; 3.20.19.10; -; 1.
DR   HAMAP; MF_01031; LeuD_type1; 1.
DR   InterPro; IPR004431; 3-IsopropMal_deHydase_ssu.
DR   InterPro; IPR015928; Aconitase/3IPM_dehydase_swvl.
DR   InterPro; IPR000573; AconitaseA/IPMdHydase_ssu_swvl.
DR   InterPro; IPR033940; IPMI_Swivel.
DR   Pfam; PF00694; Aconitase_C; 1.
DR   TIGRFAMs; TIGR00171; leuD; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Branched-chain amino acid biosynthesis;
KW   Leucine biosynthesis; Lyase; Reference proteome.
FT   CHAIN           1..196
FT                   /note="3-isopropylmalate dehydratase small subunit"
FT                   /id="PRO_0000141814"
SQ   SEQUENCE   196 AA;  22028 MW;  4EB8C6C096299CA1 CRC64;
     MEKFIKHTGV GVPLQRSNVD TDQIIPAVYL KRVTRTGFED GLFSNWRKND PDFVLNQDTY
     KNGSVLIAGP DFGTGSSREH AVWALMDYGF RAVFSSRFAD IFRGNSGKAG LLTGIMEQSD
     IELLWKLMEQ TPGLEMTVDL ENQTVVAGDT VISFEVDPYI RWRLMEGLDD VGLTLRKVDE
     IEAYEAKRPA FKPSAL