ID   LEUD_BRAHW              Reviewed;         163 AA.
AC   C0R087;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   05-MAY-2009, sequence version 1.
DT   03-AUG-2022, entry version 72.
DE   RecName: Full=3-isopropylmalate dehydratase small subunit {ECO:0000255|HAMAP-Rule:MF_01032};
DE            EC=4.2.1.33 {ECO:0000255|HAMAP-Rule:MF_01032};
DE   AltName: Full=Alpha-IPM isomerase {ECO:0000255|HAMAP-Rule:MF_01032};
DE            Short=IPMI {ECO:0000255|HAMAP-Rule:MF_01032};
DE   AltName: Full=Isopropylmalate isomerase {ECO:0000255|HAMAP-Rule:MF_01032};
GN   Name=leuD {ECO:0000255|HAMAP-Rule:MF_01032}; OrderedLocusNames=BHWA1_01042;
OS   Brachyspira hyodysenteriae (strain ATCC 49526 / WA1).
OC   Bacteria; Spirochaetes; Brachyspirales; Brachyspiraceae; Brachyspira.
OX   NCBI_TaxID=565034;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 49526 / WA1;
RX   PubMed=19262690; DOI=10.1371/journal.pone.0004641;
RA   Bellgard M.I., Wanchanthuek P., La T., Ryan K., Moolhuijzen P.,
RA   Albertyn Z., Shaban B., Motro Y., Dunn D.S., Schibeci D., Hunter A.,
RA   Barrero R., Phillips N.D., Hampson D.J.;
RT   "Genome sequence of the pathogenic intestinal spirochete Brachyspira
RT   hyodysenteriae reveals adaptations to its lifestyle in the porcine large
RT   intestine.";
RL   PLoS ONE 4:E4641-E4641(2009).
CC   -!- FUNCTION: Catalyzes the isomerization between 2-isopropylmalate and 3-
CC       isopropylmalate, via the formation of 2-isopropylmaleate.
CC       {ECO:0000255|HAMAP-Rule:MF_01032}.
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_01032};
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_01032}.
CC   -!- SUBUNIT: Heterodimer of LeuC and LeuD. {ECO:0000255|HAMAP-
CC       Rule:MF_01032}.
CC   -!- SIMILARITY: Belongs to the LeuD family. LeuD type 2 subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01032}.
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DR   EMBL; CP001357; ACN83525.1; -; Genomic_DNA.
DR   RefSeq; WP_012670574.1; NC_012225.1.
DR   AlphaFoldDB; C0R087; -.
DR   SMR; C0R087; -.
DR   STRING; 565034.BHWA1_01042; -.
DR   EnsemblBacteria; ACN83525; ACN83525; BHWA1_01042.
DR   GeneID; 63962150; -.
DR   KEGG; bhy:BHWA1_01042; -.
DR   eggNOG; COG0066; Bacteria.
DR   HOGENOM; CLU_081378_1_1_12; -.
DR   OMA; GLPIIEC; -.
DR   UniPathway; UPA00048; UER00071.
DR   Proteomes; UP000001803; Chromosome.
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_01032; LeuD_type2; 1.
DR   InterPro; IPR015928; Aconitase/3IPM_dehydase_swvl.
DR   InterPro; IPR000573; AconitaseA/IPMdHydase_ssu_swvl.
DR   InterPro; IPR033940; IPMI_Swivel.
DR   InterPro; IPR011824; LeuD/DmdB_bac.
DR   InterPro; IPR011827; LeuD_type2/HacB/DmdB.
DR   Pfam; PF00694; Aconitase_C; 1.
DR   TIGRFAMs; TIGR02084; leud; 1.
DR   TIGRFAMs; TIGR02087; LEUD_arch; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Branched-chain amino acid biosynthesis;
KW   Leucine biosynthesis; Lyase.
FT   CHAIN           1..163
FT                   /note="3-isopropylmalate dehydratase small subunit"
FT                   /id="PRO_1000213360"
SQ   SEQUENCE   163 AA;  17959 MW;  FF91E29E2299353B CRC64;
     MKAKGFVHKY GDNVDTDVII PARYLNTANH KELAAHCMED IDKDFVKKVK TGDIMVGGDN
     FGCGSSREHA PIAIKESGIS CVIASSFARI FYRNSINIGL AILECDEASK KISDNDEVEV
     DFDNGLIKNI TKNETYKAEP FPEFIKKIIN SNGLLNSIKN SKG