ID   LEUD_ARTS2              Reviewed;         200 AA.
AC   A0JXX7;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   12-DEC-2006, sequence version 1.
DT   25-MAY-2022, entry version 90.
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=Arth_2518;
OS   Arthrobacter sp. (strain FB24).
OC   Bacteria; Actinobacteria; Micrococcales; Micrococcaceae; Arthrobacter.
OX   NCBI_TaxID=290399;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=FB24;
RX   PubMed=24501649; DOI=10.4056/sigs.4438185;
RA   Nakatsu C.H., Barabote R., Thompson S., Bruce D., Detter C., Brettin T.,
RA   Han C., Beasley F., Chen W., Konopka A., Xie G.;
RT   "Complete genome sequence of Arthrobacter sp. strain FB24.";
RL   Stand. Genomic Sci. 9:106-116(2013).
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; CP000454; ABK03897.1; -; Genomic_DNA.
DR   RefSeq; WP_011692359.1; NC_008541.1.
DR   AlphaFoldDB; A0JXX7; -.
DR   SMR; A0JXX7; -.
DR   STRING; 290399.Arth_2518; -.
DR   EnsemblBacteria; ABK03897; ABK03897; Arth_2518.
DR   KEGG; art:Arth_2518; -.
DR   eggNOG; COG0066; Bacteria.
DR   HOGENOM; CLU_081378_0_1_11; -.
DR   OMA; AFTTHTG; -.
DR   OrthoDB; 1384217at2; -.
DR   UniPathway; UPA00048; UER00071.
DR   Proteomes; UP000000754; 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..200
FT                   /note="3-isopropylmalate dehydratase small subunit"
FT                   /id="PRO_1000063731"
SQ   SEQUENCE   200 AA;  22100 MW;  360AD080C8A2DC7A CRC64;
     MEKFSTHTGI GVPLRQSNVD TDQIIPAVYL KRITRTGFED ALFAAWRKDP AFILNQEPFN
     AGSVLVAGPD FGTGSSREHA VWALKDFGFK TVLSSRFADI FRGNSGKQGL LAAEVAQDDI
     ELIWKVLENA PGTEVTVDLV SKTVMCGNVV APFEIDDYTR WRLLEGLDDI GLTLQHEEDI
     TAYEATRPAF KPKTLPARLS