ID   LEUD_BEUC1              Reviewed;         212 AA.
AC   C5C3D1;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   28-JUL-2009, sequence version 1.
DT   25-MAY-2022, entry version 67.
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=Bcav_1574;
OS   Beutenbergia cavernae (strain ATCC BAA-8 / DSM 12333 / NBRC 16432).
OC   Bacteria; Actinobacteria; Micrococcales; Beutenbergiaceae; Beutenbergia.
OX   NCBI_TaxID=471853;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-8 / DSM 12333 / NBRC 16432;
RX   PubMed=21304633; DOI=10.4056/sigs.1162;
RA   Land M., Pukall R., Abt B., Goker M., Rohde M., Glavina Del Rio T.,
RA   Tice H., Copeland A., Cheng J.F., Lucas S., Chen F., Nolan M., Bruce D.,
RA   Goodwin L., Pitluck S., Ivanova N., Mavromatis K., Ovchinnikova G.,
RA   Pati A., Chen A., Palaniappan K., Hauser L., Chang Y.J., Jefferies C.C.,
RA   Saunders E., Brettin T., Detter J.C., Han C., Chain P., Bristow J.,
RA   Eisen J.A., Markowitz V., Hugenholtz P., Kyrpides N.C., Klenk H.P.,
RA   Lapidus A.;
RT   "Complete genome sequence of Beutenbergia cavernae type strain (HKI
RT   0122).";
RL   Stand. Genomic Sci. 1:21-28(2009).
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; CP001618; ACQ79830.1; -; Genomic_DNA.
DR   RefSeq; WP_015882070.1; NC_012669.1.
DR   AlphaFoldDB; C5C3D1; -.
DR   SMR; C5C3D1; -.
DR   STRING; 471853.Bcav_1574; -.
DR   EnsemblBacteria; ACQ79830; ACQ79830; Bcav_1574.
DR   KEGG; bcv:Bcav_1574; -.
DR   eggNOG; COG0066; Bacteria.
DR   HOGENOM; CLU_081378_0_1_11; -.
DR   OMA; AFTTHTG; -.
DR   OrthoDB; 1384217at2; -.
DR   UniPathway; UPA00048; UER00071.
DR   Proteomes; UP000007962; 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..212
FT                   /note="3-isopropylmalate dehydratase small subunit"
FT                   /id="PRO_1000213346"
SQ   SEQUENCE   212 AA;  23307 MW;  E44F5D6FA579250B CRC64;
     MEKFTTHTGV GVPLRRSNVD TDQIIPAVYL KRVTRTGFED ALFAAWRGNE TFVLNQPAYT
     HGSVLVAGPD FGTGSSREHA VWALKDYGFR VVIASRFADI FRGNSGKQGL LAAQVAQDDV
     ELIWKVLENS PGTEVTVDLA AKQVTVADIV APFQIDDYTR WRLLEGLDDI GLTLQHADEI
     TAFEATREPW RPLTLPAKHL PAVPITAARP VA