ID   LEUD_THEKO              Reviewed;         163 AA.
AC   Q5JFV7;
DT   30-AUG-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-FEB-2005, sequence version 1.
DT   25-MAY-2022, entry version 95.
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=TK0281;
OS   Thermococcus kodakarensis (strain ATCC BAA-918 / JCM 12380 / KOD1)
OS   (Pyrococcus kodakaraensis (strain KOD1)).
OC   Archaea; Euryarchaeota; Thermococci; Thermococcales; Thermococcaceae;
OC   Thermococcus.
OX   NCBI_TaxID=69014;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-918 / JCM 12380 / KOD1;
RX   PubMed=15710748; DOI=10.1101/gr.3003105;
RA   Fukui T., Atomi H., Kanai T., Matsumi R., Fujiwara S., Imanaka T.;
RT   "Complete genome sequence of the hyperthermophilic archaeon Thermococcus
RT   kodakaraensis KOD1 and comparison with Pyrococcus genomes.";
RL   Genome Res. 15:352-363(2005).
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; AP006878; BAD84470.1; -; Genomic_DNA.
DR   RefSeq; WP_011249236.1; NC_006624.1.
DR   AlphaFoldDB; Q5JFV7; -.
DR   SMR; Q5JFV7; -.
DR   STRING; 69014.TK0281; -.
DR   EnsemblBacteria; BAD84470; BAD84470; TK0281.
DR   GeneID; 3235943; -.
DR   KEGG; tko:TK0281; -.
DR   PATRIC; fig|69014.16.peg.280; -.
DR   eggNOG; arCOG02230; Archaea.
DR   HOGENOM; CLU_081378_1_1_2; -.
DR   InParanoid; Q5JFV7; -.
DR   OMA; ITPGRYN; -.
DR   OrthoDB; 86621at2157; -.
DR   PhylomeDB; Q5JFV7; -.
DR   UniPathway; UPA00048; UER00071.
DR   Proteomes; UP000000536; 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   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; IPR011827; LeuD_type2/HacB/DmdB.
DR   Pfam; PF00694; Aconitase_C; 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; Reference proteome.
FT   CHAIN           1..163
FT                   /note="3-isopropylmalate dehydratase small subunit"
FT                   /id="PRO_0000141950"
SQ   SEQUENCE   163 AA;  17825 MW;  221905C5B098D7E9 CRC64;
     MITRGRVWRF GDNVSTDTIT PGRYNLTKDP EELARIAFIE ARPEFSREVK PGDVVVGGRN
     FGIGSSRESA ALSLKAAGVA GVIAESFGRI FYRNAVNLGL PLLVGDTSGL RDGEVVEVNW
     RTGEVRTENG VFHFKPLDGF LLRIVEEGGI LSFIARRGDL CIE