ID   LEUD_MARN8              Reviewed;         215 AA.
AC   A1U0X9;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   25-MAY-2022, entry version 86.
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=Maqu_1564;
OS   Marinobacter nauticus (strain ATCC 700491 / DSM 11845 / VT8) (Marinobacter
OS   aquaeolei).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC   Marinobacteraceae; Marinobacter.
OX   NCBI_TaxID=351348;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700491 / DSM 11845 / VT8;
RX   PubMed=21335390; DOI=10.1128/aem.01866-10;
RA   Singer E., Webb E.A., Nelson W.C., Heidelberg J.F., Ivanova N., Pati A.,
RA   Edwards K.J.;
RT   "Genomic potential of Marinobacter aquaeolei, a biogeochemical
RT   'opportunitroph'.";
RL   Appl. Environ. Microbiol. 77:2763-2771(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; CP000514; ABM18648.1; -; Genomic_DNA.
DR   RefSeq; WP_011785050.1; NC_008740.1.
DR   AlphaFoldDB; A1U0X9; -.
DR   SMR; A1U0X9; -.
DR   STRING; 351348.Maqu_1564; -.
DR   EnsemblBacteria; ABM18648; ABM18648; Maqu_1564.
DR   KEGG; maq:Maqu_1564; -.
DR   eggNOG; COG0066; Bacteria.
DR   HOGENOM; CLU_081378_0_3_6; -.
DR   OMA; AFTTHTG; -.
DR   OrthoDB; 1384217at2; -.
DR   UniPathway; UPA00048; UER00071.
DR   Proteomes; UP000000998; 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.
FT   CHAIN           1..215
FT                   /note="3-isopropylmalate dehydratase small subunit"
FT                   /id="PRO_1000063784"
SQ   SEQUENCE   215 AA;  24499 MW;  5A6C7CD9756B8F93 CRC64;
     MRAFTQHQGT VAPMDRSNVD TDMIIPKQFL KSIKRTGFGP NLFDELRYLD EGKPDQDCSN
     RPLNPDFVLN QDRYKNASVL LARTNFGCGS SREHAPWALD DFGFRVIIAP SFADIFYNNC
     FKNGLLPIVL DEKVVDRLFR ETEENEGYQL TVDLEAKTVT TPGGESFSFE VDDFRRHCLL
     NGLDDIGVTL EDADTIRAYE ESRRKTAPWL FNTGN