ID   LEUD_LEPBL              Reviewed;         206 AA.
AC   Q051Y3;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   14-NOV-2006, sequence version 1.
DT   25-MAY-2022, entry version 85.
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=LBL_1372;
OS   Leptospira borgpetersenii serovar Hardjo-bovis (strain L550).
OC   Bacteria; Spirochaetes; Leptospirales; Leptospiraceae; Leptospira.
OX   NCBI_TaxID=355276;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=L550;
RX   PubMed=16973745; DOI=10.1073/pnas.0603979103;
RA   Bulach D.M., Zuerner R.L., Wilson P., Seemann T., McGrath A., Cullen P.A.,
RA   Davis J., Johnson M., Kuczek E., Alt D.P., Peterson-Burch B., Coppel R.L.,
RA   Rood J.I., Davies J.K., Adler B.;
RT   "Genome reduction in Leptospira borgpetersenii reflects limited
RT   transmission potential.";
RL   Proc. Natl. Acad. Sci. U.S.A. 103:14560-14565(2006).
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; CP000348; ABJ78862.1; -; Genomic_DNA.
DR   RefSeq; WP_011670073.1; NC_008508.1.
DR   AlphaFoldDB; Q051Y3; -.
DR   SMR; Q051Y3; -.
DR   KEGG; lbl:LBL_1372; -.
DR   PATRIC; fig|355276.3.peg.1738; -.
DR   HOGENOM; CLU_081378_0_3_12; -.
DR   OMA; AFTTHTG; -.
DR   OrthoDB; 1384217at2; -.
DR   UniPathway; UPA00048; UER00071.
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..206
FT                   /note="3-isopropylmalate dehydratase small subunit"
FT                   /id="PRO_1000063779"
SQ   SEQUENCE   206 AA;  23413 MW;  CEEFF949F6AEB2A5 CRC64;
     MKPFTVLNGI AALLDRPNVD TDQIIPKQFL RKIERTGFGV HLFHDWRYLD DAGTKLNPEF
     SLNQERYKGA SILLTRDNFG CGSSREHAPW ALEDYGFRSI IAPSYADIFF NNCFKNGMLP
     VVLKSEEVEE LFRSVSGNVG AKLQIDLDKQ TVTGPTGKVY TFEVDSFRKY CLYNGLDDIG
     LTLKQGSKIG AFEKKQKEVE PWLYVI