ILVD_BURVG
ID ILVD_BURVG Reviewed; 619 AA.
AC A4JN03;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-2007, sequence version 1.
DT 03-AUG-2022, entry version 84.
DE RecName: Full=Dihydroxy-acid dehydratase {ECO:0000255|HAMAP-Rule:MF_00012};
DE Short=DAD {ECO:0000255|HAMAP-Rule:MF_00012};
DE EC=4.2.1.9 {ECO:0000255|HAMAP-Rule:MF_00012};
GN Name=ilvD {ECO:0000255|HAMAP-Rule:MF_00012};
GN OrderedLocusNames=Bcep1808_4698;
OS Burkholderia vietnamiensis (strain G4 / LMG 22486) (Burkholderia cepacia
OS (strain R1808)).
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC Burkholderiaceae; Burkholderia; Burkholderia cepacia complex.
OX NCBI_TaxID=269482;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=G4 / LMG 22486;
RG US DOE Joint Genome Institute;
RA Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA Chain P., Malfatti S., Shin M., Vergez L., Schmutz J., Larimer F., Land M.,
RA Hauser L., Kyrpides N., Tiedje J., Richardson P.;
RT "Complete sequence of chromosome 2 of Burkholderia vietnamiensis G4.";
RL Submitted (MAR-2007) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Functions in the biosynthesis of branched-chain amino acids.
CC Catalyzes the dehydration of (2R,3R)-2,3-dihydroxy-3-methylpentanoate
CC (2,3-dihydroxy-3-methylvalerate) into 2-oxo-3-methylpentanoate (2-oxo-
CC 3-methylvalerate) and of (2R)-2,3-dihydroxy-3-methylbutanoate (2,3-
CC dihydroxyisovalerate) into 2-oxo-3-methylbutanoate (2-oxoisovalerate),
CC the penultimate precursor to L-isoleucine and L-valine, respectively.
CC {ECO:0000255|HAMAP-Rule:MF_00012}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(2R)-2,3-dihydroxy-3-methylbutanoate = 3-methyl-2-oxobutanoate
CC + H2O; Xref=Rhea:RHEA:24809, ChEBI:CHEBI:11851, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:49072; EC=4.2.1.9; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_00012};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:24810;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00012};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(2R,3R)-2,3-dihydroxy-3-methylpentanoate = (S)-3-methyl-2-
CC oxopentanoate + H2O; Xref=Rhea:RHEA:27694, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:35146, ChEBI:CHEBI:49258; EC=4.2.1.9;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00012};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:27695;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00012};
CC -!- COFACTOR:
CC Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00012};
CC Note=Binds 1 [2Fe-2S] cluster per subunit. This cluster acts as a Lewis
CC acid cofactor. {ECO:0000255|HAMAP-Rule:MF_00012};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00012};
CC -!- PATHWAY: Amino-acid biosynthesis; L-isoleucine biosynthesis; L-
CC isoleucine from 2-oxobutanoate: step 3/4. {ECO:0000255|HAMAP-
CC Rule:MF_00012}.
CC -!- PATHWAY: Amino-acid biosynthesis; L-valine biosynthesis; L-valine from
CC pyruvate: step 3/4. {ECO:0000255|HAMAP-Rule:MF_00012}.
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00012}.
CC -!- SIMILARITY: Belongs to the IlvD/Edd family. {ECO:0000255|HAMAP-
CC Rule:MF_00012}.
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DR EMBL; CP000615; ABO57656.1; -; Genomic_DNA.
DR AlphaFoldDB; A4JN03; -.
DR SMR; A4JN03; -.
DR STRING; 269482.Bcep1808_4698; -.
DR EnsemblBacteria; ABO57656; ABO57656; Bcep1808_4698.
DR KEGG; bvi:Bcep1808_4698; -.
DR eggNOG; COG0129; Bacteria.
DR HOGENOM; CLU_014271_4_2_4; -.
DR OMA; TQGRNMA; -.
DR UniPathway; UPA00047; UER00057.
DR UniPathway; UPA00049; UER00061.
DR Proteomes; UP000002287; Chromosome 2.
DR GO; GO:0051537; F:2 iron, 2 sulfur cluster binding; IEA:UniProtKB-UniRule.
DR GO; GO:0004160; F:dihydroxy-acid dehydratase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0009097; P:isoleucine biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0009099; P:valine biosynthetic process; IEA:UniProtKB-UniRule.
DR Gene3D; 3.50.30.80; -; 1.
DR HAMAP; MF_00012; IlvD; 1.
DR InterPro; IPR042096; Dihydro-acid_dehy_C.
DR InterPro; IPR004404; DihydroxyA_deHydtase.
DR InterPro; IPR000581; DiOHA_6PGluconate_deHydtase.
DR InterPro; IPR020558; DiOHA_6PGluconate_deHydtase_CS.
DR InterPro; IPR037237; IlvD/EDD_N.
DR Pfam; PF00920; ILVD_EDD; 1.
DR SUPFAM; SSF143975; SSF143975; 1.
DR TIGRFAMs; TIGR00110; ilvD; 1.
DR PROSITE; PS00886; ILVD_EDD_1; 1.
DR PROSITE; PS00887; ILVD_EDD_2; 1.
PE 3: Inferred from homology;
KW 2Fe-2S; Amino-acid biosynthesis; Branched-chain amino acid biosynthesis;
KW Iron; Iron-sulfur; Lyase; Magnesium; Metal-binding; Reference proteome.
FT CHAIN 1..619
FT /note="Dihydroxy-acid dehydratase"
FT /id="PRO_1000000967"
FT ACT_SITE 522
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00012"
FT BINDING 81
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00012"
FT BINDING 122
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00012"
FT BINDING 123
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00012"
FT BINDING 124
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /note="via carbamate group"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00012"
FT BINDING 201
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00012"
FT BINDING 496
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00012"
FT MOD_RES 124
FT /note="N6-carboxylysine"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00012"
SQ SEQUENCE 619 AA; 66621 MW; D94F92257728F0EA CRC64;
MPTYRSKTST AGRNMAGARS LWRATGMKDD DFSKPIIAVV NSFTQFVPGH VHLKDLGQLV
AREIEAAGGV AKEFNTIAVD DGIAMGHDGM LYSLPSRDII ADSVEYMVNA HCADAMVCIS
NCDKITPGML MAAMRLNIPV IFVSGGPMEA GKTRLANPVT KTIELKKLDL VDAMVIAADQ
SYSDADVAEV ERSACPTCGS CSGMFTANSM NCLTEALGLS LPGNGTVVAT HADREQLFKR
AGRRIVELTR QYYEQDDVRV LPRSVGFNAF ENAMTLDIAM GGSTNTILHL LAIAREAGID
FTMRDIDRLS RVVPQLCKVA PNTNKYHIED VHRAGGIMAI LGELDRAGRL HTDVPTVHAP
TLKDALDQWD IVRTQDEAVR KFYLAGPAGV PTQIAFSQDT RWPSLDLDRA EGCIRSYEHA
FSKEGGLAVL TGNIALDGCV VKTAGVDESI LVFEGSAHVT ESQDEAVENI LNDKVKAGDV
VIVRYEGPKG GPGMQEMLYP TSYIKSKGLG KACALLTDGR FSGGTSGLSI GHCSPEAAAG
GAIGLVRDGD RIRIDIPNRT IDVLVSDEEL ARRREEQNAK GWKPAQPRPR KVSAALKAYA
KLVMSADKGA VRDLSLLDD
