ID   LEUD_DELAS              Reviewed;         217 AA.
AC   A9BNH1;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   15-JAN-2008, sequence version 1.
DT   03-AUG-2022, entry version 77.
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=Daci_5237;
OS   Delftia acidovorans (strain DSM 14801 / SPH-1).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC   Comamonadaceae; Delftia.
OX   NCBI_TaxID=398578;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 14801 / SPH-1;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA   Tice H., Pitluck S., Lowry S., Clum A., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Kim E., Schleheck D., Richardson P.;
RT   "Complete sequence of Delftia acidovorans DSM 14801 / SPH-1.";
RL   Submitted (NOV-2007) to the EMBL/GenBank/DDBJ databases.
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; CP000884; ABX37866.1; -; Genomic_DNA.
DR   RefSeq; WP_012207036.1; NC_010002.1.
DR   AlphaFoldDB; A9BNH1; -.
DR   SMR; A9BNH1; -.
DR   STRING; 398578.Daci_5237; -.
DR   PRIDE; A9BNH1; -.
DR   EnsemblBacteria; ABX37866; ABX37866; Daci_5237.
DR   GeneID; 60689582; -.
DR   KEGG; dac:Daci_5237; -.
DR   eggNOG; COG0066; Bacteria.
DR   HOGENOM; CLU_081378_0_3_4; -.
DR   OMA; AFTTHTG; -.
DR   UniPathway; UPA00048; UER00071.
DR   Proteomes; UP000000784; 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..217
FT                   /note="3-isopropylmalate dehydratase small subunit"
FT                   /id="PRO_1000135799"
SQ   SEQUENCE   217 AA;  24608 MW;  39FDE4A7CD2AC683 CRC64;
     MQQFTVHKGL VAPMDRENVD TDAIIPKQFL KSIKKTGFGV NLFDEWRYLD HGEPGQDPAS
     RKPNPDFVLN QPRYAGASIL VARKNFGCGS SREHAPWALD QYGFRAILAP SFADIFFNNC
     FKNGLLPIVL PEATIDMLFN EIAAFPGYEL TIDLDRQVIV RPQGEEIPFD VIAFRKFCLL
     NGFDDIGLTL RHADKIRAYE AERLATKPWL AHTLVQR