ID   LEUD_THISH              Reviewed;         212 AA.
AC   B8GQD7;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-MAR-2009, sequence version 1.
DT   25-MAY-2022, entry version 68.
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=Tgr7_1246;
OS   Thioalkalivibrio sulfidiphilus (strain HL-EbGR7).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Chromatiales;
OC   Ectothiorhodospiraceae; Thioalkalivibrio.
OX   NCBI_TaxID=396588;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HL-EbGR7;
RX   PubMed=21475584; DOI=10.4056/sigs.1483693;
RA   Muyzer G., Sorokin D.Y., Mavromatis K., Lapidus A., Clum A., Ivanova N.,
RA   Pati A., d'Haeseleer P., Woyke T., Kyrpides N.C.;
RT   "Complete genome sequence of 'Thioalkalivibrio sulfidophilus' HL-EbGr7.";
RL   Stand. Genomic Sci. 4:23-35(2011).
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; CP001339; ACL72332.1; -; Genomic_DNA.
DR   RefSeq; WP_012637815.1; NC_011901.1.
DR   AlphaFoldDB; B8GQD7; -.
DR   SMR; B8GQD7; -.
DR   STRING; 396588.Tgr7_1246; -.
DR   EnsemblBacteria; ACL72332; ACL72332; Tgr7_1246.
DR   KEGG; tgr:Tgr7_1246; -.
DR   eggNOG; COG0066; Bacteria.
DR   HOGENOM; CLU_081378_0_3_6; -.
DR   OMA; AFTTHTG; -.
DR   OrthoDB; 1384217at2; -.
DR   UniPathway; UPA00048; UER00071.
DR   Proteomes; UP000002383; 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..212
FT                   /note="3-isopropylmalate dehydratase small subunit"
FT                   /id="PRO_1000149425"
SQ   SEQUENCE   212 AA;  23902 MW;  9DAA68A4FF002695 CRC64;
     MKPLTTVDGL VLPLDRSNVD TDAIIPKQYL KSVKRTGFGP NLFDDWRYLE PGEPGMDHSA
     RKPNPDFVLN APRYQGAEIL LARKNFGCGS SREHAVWALT DYGIRVVIAP SFADIFFGNS
     FKNGLLPIVL DEAVVDRLFQ EVEATEGYRL KVDLAEQTVT TPSGEAFPFE VGEFHKYCLL
     NGLDDIGLTL QHADEIRAYE QRRRAEAPWL FR