ID   LEUD_ALCBS              Reviewed;         214 AA.
AC   Q0VPI1;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-SEP-2006, sequence version 1.
DT   25-MAY-2022, entry version 92.
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=ABO_1469;
OS   Alcanivorax borkumensis (strain ATCC 700651 / DSM 11573 / NCIMB 13689 /
OS   SK2).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Oceanospirillales;
OC   Alcanivoracaceae; Alcanivorax.
OX   NCBI_TaxID=393595;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700651 / DSM 11573 / NCIMB 13689 / SK2;
RX   PubMed=16878126; DOI=10.1038/nbt1232;
RA   Schneiker S., Martins dos Santos V.A.P., Bartels D., Bekel T., Brecht M.,
RA   Buhrmester J., Chernikova T.N., Denaro R., Ferrer M., Gertler C.,
RA   Goesmann A., Golyshina O.V., Kaminski F., Khachane A.N., Lang S., Linke B.,
RA   McHardy A.C., Meyer F., Nechitaylo T., Puehler A., Regenhardt D., Rupp O.,
RA   Sabirova J.S., Selbitschka W., Yakimov M.M., Timmis K.N., Vorhoelter F.-J.,
RA   Weidner S., Kaiser O., Golyshin P.N.;
RT   "Genome sequence of the ubiquitous hydrocarbon-degrading marine bacterium
RT   Alcanivorax borkumensis.";
RL   Nat. Biotechnol. 24:997-1004(2006).
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; AM286690; CAL16917.1; -; Genomic_DNA.
DR   RefSeq; WP_011588750.1; NC_008260.1.
DR   AlphaFoldDB; Q0VPI1; -.
DR   SMR; Q0VPI1; -.
DR   STRING; 393595.ABO_1469; -.
DR   EnsemblBacteria; CAL16917; CAL16917; ABO_1469.
DR   KEGG; abo:ABO_1469; -.
DR   eggNOG; COG0066; Bacteria.
DR   HOGENOM; CLU_081378_0_3_6; -.
DR   OMA; AFTTHTG; -.
DR   OrthoDB; 1384217at2; -.
DR   UniPathway; UPA00048; UER00071.
DR   Proteomes; UP000008871; 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..214
FT                   /note="3-isopropylmalate dehydratase small subunit"
FT                   /id="PRO_1000063726"
SQ   SEQUENCE   214 AA;  24295 MW;  A108DD152183EAAA CRC64;
     MEKFVRHDGL VAPLDRANVD TDQIIPKQFL KSIKRTGFGP NLFDEWRYLD EGFPGQDNAA
     RLVNNDFVLN QPDYQGASIL LTRRNFGCGS SREHAPWALM DFGFKAIIAP SFADIFYNNC
     FKNGLLPIVL SEDNVEALFQ VVSSKGGYRI TIDLEGQQVI PESGEPLPFE IDEFRKHCLL
     NGLDEIGLTL NEADAIRAYE RSRIEREPWV FADH