ID   LEUD_METMA              Reviewed;         162 AA.
AC   Q8PWT6;
DT   19-SEP-2002, integrated into UniProtKB/Swiss-Prot.
DT   19-SEP-2002, sequence version 1.
DT   25-MAY-2022, entry version 122.
DE   RecName: Full=3-isopropylmalate dehydratase small subunit;
DE            EC=4.2.1.33;
DE   AltName: Full=Alpha-IPM isomerase;
DE            Short=IPMI;
DE   AltName: Full=Isopropylmalate isomerase;
GN   Name=leuD; OrderedLocusNames=MM_1490;
OS   Methanosarcina mazei (strain ATCC BAA-159 / DSM 3647 / Goe1 / Go1 / JCM
OS   11833 / OCM 88) (Methanosarcina frisia).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC   Methanosarcinales; Methanosarcinaceae; Methanosarcina.
OX   NCBI_TaxID=192952;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-159 / DSM 3647 / Goe1 / Go1 / JCM 11833 / OCM 88;
RX   PubMed=12125824;
RA   Deppenmeier U., Johann A., Hartsch T., Merkl R., Schmitz R.A.,
RA   Martinez-Arias R., Henne A., Wiezer A., Baeumer S., Jacobi C.,
RA   Brueggemann H., Lienard T., Christmann A., Boemecke M., Steckel S.,
RA   Bhattacharyya A., Lykidis A., Overbeek R., Klenk H.-P., Gunsalus R.P.,
RA   Fritz H.-J., Gottschalk G.;
RT   "The genome of Methanosarcina mazei: evidence for lateral gene transfer
RT   between Bacteria and Archaea.";
RL   J. Mol. Microbiol. Biotechnol. 4:453-461(2002).
CC   -!- FUNCTION: Catalyzes the isomerization between 2-isopropylmalate and 3-
CC       isopropylmalate, via the formation of 2-isopropylmaleate.
CC       {ECO:0000250}.
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;
CC   -!- PATHWAY: Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine
CC       from 3-methyl-2-oxobutanoate: step 2/4.
CC   -!- SUBUNIT: Heterodimer of LeuC and LeuD. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the LeuD family. LeuD type 2 subfamily.
CC       {ECO:0000305}.
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DR   EMBL; AE008384; AAM31186.1; -; Genomic_DNA.
DR   RefSeq; WP_011033436.1; NC_003901.1.
DR   AlphaFoldDB; Q8PWT6; -.
DR   SMR; Q8PWT6; -.
DR   STRING; 192952.MM_1490; -.
DR   EnsemblBacteria; AAM31186; AAM31186; MM_1490.
DR   GeneID; 24883223; -.
DR   KEGG; mma:MM_1490; -.
DR   PATRIC; fig|192952.21.peg.1722; -.
DR   eggNOG; arCOG02230; Archaea.
DR   HOGENOM; CLU_081378_1_1_2; -.
DR   OMA; AKHAFEG; -.
DR   UniPathway; UPA00048; UER00071.
DR   Proteomes; UP000000595; 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; 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..162
FT                   /note="3-isopropylmalate dehydratase small subunit"
FT                   /id="PRO_0000141941"
SQ   SEQUENCE   162 AA;  17810 MW;  78B1C5DE2287C363 CRC64;
     MKGRAWKFGD DVDTDAVIPG RYLIFNTPGE LAKYTFEGVR PDFAKNVHEN DIVVAGSNFG
     CGSSREHAPL ALKGSKVSCV IAKSFARIFF RNAINIGVPV LECPDTDKID DGDELEVDIS
     TGVIQNRTKG ETYQATPLPD FVREIVDEGG LIEYARKLVS ER