ID   LEUD_LACLM              Reviewed;         191 AA.
AC   A2RKR1;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-MAR-2007, sequence version 1.
DT   03-AUG-2022, entry version 88.
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=llmg_1282;
OS   Lactococcus lactis subsp. cremoris (strain MG1363).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Lactococcus; Lactococcus cremoris subsp. cremoris.
OX   NCBI_TaxID=416870;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MG1363;
RX   PubMed=17307855; DOI=10.1128/jb.01768-06;
RA   Wegmann U., O'Connell-Motherway M., Zomer A., Buist G., Shearman C.,
RA   Canchaya C., Ventura M., Goesmann A., Gasson M.J., Kuipers O.P.,
RA   van Sinderen D., Kok J.;
RT   "The complete genome sequence of the lactic acid bacterial paradigm
RT   Lactococcus lactis subsp. cremoris MG1363.";
RL   J. Bacteriol. 189:3256-3270(2007).
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; AM406671; CAL97875.1; -; Genomic_DNA.
DR   RefSeq; WP_011835161.1; NZ_WJVF01000013.1.
DR   AlphaFoldDB; A2RKR1; -.
DR   SMR; A2RKR1; -.
DR   STRING; 416870.llmg_1282; -.
DR   EnsemblBacteria; CAL97875; CAL97875; llmg_1282.
DR   KEGG; llm:llmg_1282; -.
DR   eggNOG; COG0066; Bacteria.
DR   HOGENOM; CLU_081378_0_3_9; -.
DR   OMA; AFTTHTG; -.
DR   PhylomeDB; A2RKR1; -.
DR   BioCyc; LLAC416870:LLMG_RS06500-MON; -.
DR   UniPathway; UPA00048; UER00071.
DR   Proteomes; UP000000364; 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.
FT   CHAIN           1..191
FT                   /note="3-isopropylmalate dehydratase small subunit"
FT                   /id="PRO_1000063777"
SQ   SEQUENCE   191 AA;  21948 MW;  4950C9560A886952 CRC64;
     MEKFTIYKGT SVPLMNDNID TDQIIPKQFL KAIDKKGFGK NLFYEWRYSK DYEENPDFML
     NKPQYRKASL LISGDNFGSG SSREHAAWAL ADYGFRAIIA GSYSDIFYNN SLKNGLLPIV
     QPKEALKSLA QLSSQEEITI DLPHQLIQTS TENFYFEIDP IWKDKLINGL DDIGITLQYE
     QAITAYEQKH Q