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Database: UniProt
Entry: A0A095XWI4_9ACTO
LinkDB: A0A095XWI4_9ACTO
Original site: A0A095XWI4_9ACTO 
ID   A0A095XWI4_9ACTO        Unreviewed;       615 AA.
AC   A0A095XWI4;
DT   26-NOV-2014, integrated into UniProtKB/TrEMBL.
DT   26-NOV-2014, sequence version 1.
DT   24-JAN-2024, entry version 42.
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   ORFNames=HMPREF1627_07835 {ECO:0000313|EMBL:KGE99076.1};
OS   Actinomyces sp. S6-Spd3.
OC   Bacteria; Actinomycetota; Actinomycetes; Actinomycetales; Actinomycetaceae;
OC   Actinomyces.
OX   NCBI_TaxID=1284680 {ECO:0000313|EMBL:KGE99076.1, ECO:0000313|Proteomes:UP000029604};
RN   [1] {ECO:0000313|EMBL:KGE99076.1, ECO:0000313|Proteomes:UP000029604}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=S6-Spd3 {ECO:0000313|EMBL:KGE99076.1,
RC   ECO:0000313|Proteomes:UP000029604};
RA   McCorrison J., Sanka R., Torralba M., Gillis M., Haft D.H., Methe B.,
RA   Sutton G., Nelson K.E.;
RL   Submitted (JUL-2014) 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}.
CC   -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC       whole genome shotgun (WGS) entry which is preliminary data.
CC       {ECO:0000313|EMBL:KGE99076.1}.
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DR   EMBL; JRMV01000281; KGE99076.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A095XWI4; -.
DR   PATRIC; fig|1284680.3.peg.1286; -.
DR   eggNOG; COG0129; Bacteria.
DR   UniPathway; UPA00047; UER00057.
DR   UniPathway; UPA00049; UER00061.
DR   Proteomes; UP000029604; Unassembled WGS sequence.
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:UP000029604}.
FT   ACT_SITE        519
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT   BINDING         82
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT   BINDING         124
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT   BINDING         125
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         493
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT   MOD_RES         125
FT                   /note="N6-carboxylysine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
SQ   SEQUENCE   615 AA;  65331 MW;  965F73EDF9FFF02E CRC64;
     MSKPLRSATS TQGRNMAGAR ALWRATGMGD GDFGKPIIAI ANSFTQFVPG HVHLKDMGEL
     VAGAIREAGG VAKEFNTIAV DDGIAMGHDG MLYSLPSREV IADSVEYMVN AHRADALVCI
     SNCDKITPGM LIAAMRLNIP TIFVSGGPME SGASIEGVVE HRLDLIDAMV MAVDNSISDT
     QLAQVEANAC PTCGSCAGMF TANSMNCLNE AIGLALPGNG TTLATQVERK KLFLEAGHRI
     VDMCRAYYDN DDDSVLPRSI ATKHAFENAM SLDVAMGGST NTVLHILAIA HEAGVDFTLD
     DIDAISRRVP CLCKVAPNST TYHIEHVHRA GGIPALLGEL NRAGLLNRDV HSVHAPSLEE
     WLGAWDIRSG SATDEAKHRY LAAPGGVRTT HAFSTANLFE SLETDSENGC IRDVEHAYTK
     DGGLAVLYGN IAENGAVIKS AGIDESLFHF VGRAFVVESQ EEAVESILSK KVQEGDVVVI
     TYEGPKGGPG MQEMLYPTSY LKGLGLGKKC ALITDGRFSG GTSGISIGHI SPEAAAGGAI
     GLVRTGDEIE IDVNKRLLRV NVSDEELERR RAEKGAAPWK PSKPRSRHVS DALKVYGMLA
     ASADKGGVRI LPDWA
//
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