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LEU3_RUEPO
ID   LEU3_RUEPO              Reviewed;         367 AA.
AC   Q5LWZ5;
DT   10-JAN-2006, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-2005, sequence version 1.
DT   03-AUG-2022, entry version 101.
DE   RecName: Full=3-isopropylmalate dehydrogenase {ECO:0000255|HAMAP-Rule:MF_01033};
DE            EC=1.1.1.85 {ECO:0000255|HAMAP-Rule:MF_01033};
DE   AltName: Full=3-IPM-DH {ECO:0000255|HAMAP-Rule:MF_01033};
DE   AltName: Full=Beta-IPM dehydrogenase {ECO:0000255|HAMAP-Rule:MF_01033};
DE            Short=IMDH {ECO:0000255|HAMAP-Rule:MF_01033};
GN   Name=leuB {ECO:0000255|HAMAP-Rule:MF_01033}; OrderedLocusNames=SPO0210;
OS   Ruegeria pomeroyi (strain ATCC 700808 / DSM 15171 / DSS-3) (Silicibacter
OS   pomeroyi).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC   Roseobacteraceae; Ruegeria.
OX   NCBI_TaxID=246200;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700808 / DSM 15171 / DSS-3;
RX   PubMed=15602564; DOI=10.1038/nature03170;
RA   Moran M.A., Buchan A., Gonzalez J.M., Heidelberg J.F., Whitman W.B.,
RA   Kiene R.P., Henriksen J.R., King G.M., Belas R., Fuqua C., Brinkac L.M.,
RA   Lewis M., Johri S., Weaver B., Pai G., Eisen J.A., Rahe E., Sheldon W.M.,
RA   Ye W., Miller T.R., Carlton J., Rasko D.A., Paulsen I.T., Ren Q.,
RA   Daugherty S.C., DeBoy R.T., Dodson R.J., Durkin A.S., Madupu R.,
RA   Nelson W.C., Sullivan S.A., Rosovitz M.J., Haft D.H., Selengut J., Ward N.;
RT   "Genome sequence of Silicibacter pomeroyi reveals adaptations to the marine
RT   environment.";
RL   Nature 432:910-913(2004).
RN   [2]
RP   GENOME REANNOTATION.
RC   STRAIN=ATCC 700808 / DSM 15171 / DSS-3;
RX   PubMed=25780504; DOI=10.1186/1944-3277-9-11;
RA   Rivers A.R., Smith C.B., Moran M.A.;
RT   "An updated genome annotation for the model marine bacterium Ruegeria
RT   pomeroyi DSS-3.";
RL   Stand. Genomic Sci. 9:11-11(2014).
CC   -!- FUNCTION: Catalyzes the oxidation of 3-carboxy-2-hydroxy-4-
CC       methylpentanoate (3-isopropylmalate) to 3-carboxy-4-methyl-2-
CC       oxopentanoate. The product decarboxylates to 4-methyl-2 oxopentanoate.
CC       {ECO:0000255|HAMAP-Rule:MF_01033}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(2R,3S)-3-isopropylmalate + NAD(+) = 4-methyl-2-oxopentanoate
CC         + CO2 + NADH; Xref=Rhea:RHEA:32271, ChEBI:CHEBI:16526,
CC         ChEBI:CHEBI:17865, ChEBI:CHEBI:35121, ChEBI:CHEBI:57540,
CC         ChEBI:CHEBI:57945; EC=1.1.1.85; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01033};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01033};
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01033};
CC       Note=Binds 1 Mg(2+) or Mn(2+) ion per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_01033};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine
CC       from 3-methyl-2-oxobutanoate: step 3/4. {ECO:0000255|HAMAP-
CC       Rule:MF_01033}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01033}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01033}.
CC   -!- SIMILARITY: Belongs to the isocitrate and isopropylmalate
CC       dehydrogenases family. LeuB type 1 subfamily. {ECO:0000255|HAMAP-
CC       Rule:MF_01033}.
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DR   EMBL; CP000031; AAV93535.1; -; Genomic_DNA.
DR   RefSeq; WP_011045978.1; NC_003911.12.
DR   AlphaFoldDB; Q5LWZ5; -.
DR   SMR; Q5LWZ5; -.
DR   STRING; 246200.SPO0210; -.
DR   PRIDE; Q5LWZ5; -.
DR   EnsemblBacteria; AAV93535; AAV93535; SPO0210.
DR   KEGG; sil:SPO0210; -.
DR   eggNOG; COG0473; Bacteria.
DR   HOGENOM; CLU_031953_0_3_5; -.
DR   OMA; EYDLGAR; -.
DR   OrthoDB; 1551125at2; -.
DR   UniPathway; UPA00048; UER00072.
DR   Proteomes; UP000001023; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0003862; F:3-isopropylmalate dehydrogenase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:InterPro.
DR   GO; GO:0051287; F:NAD binding; IEA:InterPro.
DR   GO; GO:0009098; P:leucine biosynthetic process; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01033; LeuB_type1; 1.
DR   InterPro; IPR019818; IsoCit/isopropylmalate_DH_CS.
DR   InterPro; IPR024084; IsoPropMal-DH-like_dom.
DR   InterPro; IPR004429; Isopropylmalate_DH.
DR   PANTHER; PTHR42979; PTHR42979; 1.
DR   Pfam; PF00180; Iso_dh; 1.
DR   SMART; SM01329; Iso_dh; 1.
DR   TIGRFAMs; TIGR00169; leuB; 1.
DR   PROSITE; PS00470; IDH_IMDH; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Branched-chain amino acid biosynthesis; Cytoplasm;
KW   Leucine biosynthesis; Magnesium; Manganese; Metal-binding; NAD;
KW   Oxidoreductase; Reference proteome.
FT   CHAIN           1..367
FT                   /note="3-isopropylmalate dehydrogenase"
FT                   /id="PRO_0000083749"
FT   BINDING         77..90
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         97
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         107
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         135
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         224
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         224
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         248
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         252
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   BINDING         287..299
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   SITE            142
FT                   /note="Important for catalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
FT   SITE            192
FT                   /note="Important for catalysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01033"
SQ   SEQUENCE   367 AA;  39481 MW;  5C6FED0D71E5CBD5 CRC64;
     MSNPSLLILP GDGIGPEVMA EVRKIIGWFG DKRGLNFDVS EDLVGGAAYD VHGVPLADET
     MAKAQEADAV LLGAVGGPKY DDLDFSVKPE RGLLRLRKEM DLFSNLRPAQ CFDALADFSS
     LKKDIVAGLD IMIVRELTSG VYFGEPRGIF EEGNERVGIN TQRYTESEIE RVARSAFELA
     MRRSKKLCSM EKANVMESGI LWREVVTRVA KDYPEVELSH MYADNGAMQL VRAPKQFDVI
     LTDNLFGDIL SDCAAMLTGS LGMLPSASLG APMANGRPKA LYEPVHGSAP DIAGQGKANP
     IACILSFAMA LRYSFDQGAE ADRLEAAVEQ VLADGVRTAD LLGTEGVTPV STTEMGAAIL
     AKLDASL
 
 
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