ID A9BTY0_DELAS Unreviewed; 646 AA.
AC A9BTY0;
DT 15-JAN-2008, integrated into UniProtKB/TrEMBL.
DT 15-JAN-2008, sequence version 1.
DT 24-JAN-2024, entry version 88.
DE RecName: Full=Dihydroxy-acid dehydratase {ECO:0000256|ARBA:ARBA00029490, ECO:0000256|HAMAP-Rule:MF_00012};
DE Short=DAD {ECO:0000256|HAMAP-Rule:MF_00012};
DE EC=4.2.1.9 {ECO:0000256|ARBA:ARBA00029490, ECO:0000256|HAMAP-Rule:MF_00012};
GN Name=ilvD {ECO:0000256|HAMAP-Rule:MF_00012};
GN OrderedLocusNames=Daci_2756 {ECO:0000313|EMBL:ABX35394.1};
OS Delftia acidovorans (strain DSM 14801 / SPH-1).
OC Bacteria; Pseudomonadota; Betaproteobacteria; Burkholderiales;
OC Comamonadaceae; Delftia.
OX NCBI_TaxID=398578 {ECO:0000313|EMBL:ABX35394.1, ECO:0000313|Proteomes:UP000000784};
RN [1] {ECO:0000313|EMBL:ABX35394.1, ECO:0000313|Proteomes:UP000000784}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 14801 / SPH-1 {ECO:0000313|Proteomes:UP000000784};
RX PubMed=15240283; DOI=10.1128/AEM.70.7.4053-4063.2004;
RA Schleheck D., Knepper T.P., Fischer K., Cook A.M.;
RT "Mineralization of individual congeners of linear alkylbenzenesulfonate by
RT defined pairs of heterotrophic bacteria.";
RL Appl. Environ. Microbiol. 70:4053-4063(2004).
RN [2] {ECO:0000313|Proteomes:UP000000784}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 14801 / SPH-1 {ECO:0000313|Proteomes:UP000000784};
RA Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA Tice H., Pitluck S., Lowry S., Clum A., Schmutz J., Larimer F., Land M.,
RA Hauser L., Kyrpides N., Kim E., Schleheck D., Richardson P.;
RT "Complete sequence of Delftia acidovorans DSM 14801 / SPH-1.";
RL Submitted (NOV-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:0000256|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;
CC Evidence={ECO:0000256|ARBA:ARBA00029304};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:24810;
CC Evidence={ECO:0000256|ARBA:ARBA00029304};
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:0000256|HAMAP-Rule:MF_00012};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|ARBA:ARBA00001946,
CC ECO:0000256|HAMAP-Rule:MF_00012};
CC -!- COFACTOR:
CC Name=[2Fe-2S] cluster; Xref=ChEBI:CHEBI:190135;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00012};
CC Note=Binds 1 [2Fe-2S] cluster per subunit. This cluster acts as a Lewis
CC acid cofactor. {ECO:0000256|HAMAP-Rule:MF_00012};
CC -!- PATHWAY: Amino-acid biosynthesis; L-isoleucine biosynthesis; L-
CC isoleucine from 2-oxobutanoate: step 3/4.
CC {ECO:0000256|ARBA:ARBA00029437, ECO:0000256|HAMAP-Rule:MF_00012}.
CC -!- PATHWAY: Amino-acid biosynthesis; L-valine biosynthesis; L-valine from
CC pyruvate: step 3/4. {ECO:0000256|ARBA:ARBA00029436, ECO:0000256|HAMAP-
CC Rule:MF_00012}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_00012}.
CC -!- SIMILARITY: Belongs to the IlvD/Edd family.
CC {ECO:0000256|ARBA:ARBA00006486, ECO:0000256|HAMAP-Rule:MF_00012}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_00012}.
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DR EMBL; CP000884; ABX35394.1; -; Genomic_DNA.
DR AlphaFoldDB; A9BTY0; -.
DR STRING; 398578.Daci_2756; -.
DR KEGG; dac:Daci_2756; -.
DR eggNOG; COG0129; Bacteria.
DR HOGENOM; CLU_014271_4_2_4; -.
DR OMA; IIPGHVH; -.
DR UniPathway; UPA00047; UER00057.
DR UniPathway; UPA00049; UER00061.
DR Proteomes; UP000000784; Chromosome.
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; IlvD/EDD C-terminal domain-like; 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 NCBIfam; TIGR00110; ilvD; 1.
DR PANTHER; PTHR43661; D-XYLONATE DEHYDRATASE; 1.
DR PANTHER; PTHR43661:SF3; D-XYLONATE DEHYDRATASE YAGF-RELATED; 1.
DR Pfam; PF00920; ILVD_EDD; 1.
DR SUPFAM; SSF143975; IlvD/EDD N-terminal domain-like; 1.
DR SUPFAM; SSF52016; LeuD/IlvD-like; 1.
DR PROSITE; PS00886; ILVD_EDD_1; 1.
DR PROSITE; PS00887; ILVD_EDD_2; 1.
PE 3: Inferred from homology;
KW 2Fe-2S {ECO:0000256|ARBA:ARBA00022714, ECO:0000256|HAMAP-Rule:MF_00012};
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605, ECO:0000256|HAMAP-
KW Rule:MF_00012};
KW Branched-chain amino acid biosynthesis {ECO:0000256|ARBA:ARBA00023304,
KW ECO:0000256|HAMAP-Rule:MF_00012};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_00012};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014, ECO:0000256|HAMAP-
KW Rule:MF_00012};
KW Lyase {ECO:0000256|ARBA:ARBA00023239, ECO:0000256|HAMAP-Rule:MF_00012};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_00012};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_00012}; Reference proteome {ECO:0000313|Proteomes:UP000000784}.
FT ACT_SITE 549
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT BINDING 108
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT BINDING 150
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT BINDING 151
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /note="via carbamate group"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT BINDING 523
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT MOD_RES 151
FT /note="N6-carboxylysine"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
SQ SEQUENCE 646 AA; 69238 MW; 27713FEC9D3D54CE CRC64;
MLCPGVGHNC HPGSRACRLL ATFDDPTMPT YRSKTSTGGR NMAGARALWR ATGMKDGDFD
KPIIAIANSF TQFVPGHVHL KDLGQLVARE IEAAGGVAKE FNTIAVDDGI AMGHDGMLYS
LPSRDIIADS VEYMVNAHCA DALVCISNCD KITPGMLMAA MRLNIPVIFV SGGPMEAGKT
KLANPNTHKL EFKKLDLVDA MVIAADSNYT DEQVAQVERS ACPTCGSCSG MFTANSMNCL
TEALGLSLPG NGTVLATHAD REELFKRAGR RIVELAREYY EQEDASVLPR SVGFKAFENA
MTLDIAMGGS TNTILHLLAI AREAEIDFTM ADIDRLSRSV PQLCKVAPNT QKYHIEDVHR
AGGIFAILGE LARAGKLHTD VPTVHAKTLG EGLAQWDITT TQDEAVRHFY LAGPAGIPTQ
VAFSQNTRWP SLDLDRAEGC IRSYEHAFSK EGGLAVLTGN IALDGCVVKS AGVDESIHVF
EGTAHVTESQ DEAVQNILDD KVKAGDIVVV RYEGPKGGPG MQEMLYPTSY IKSKGLGKEC
ALLTDGRFSG GTSGLSIGHC SPEAAAGGAI GLVRNGDRIR IDIPNRSINV LVSDEELARR
RAEQDAKGWK PAEPRPRKVS AALKAYAKLV MSADKGAVRD LSLLDD
//