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Database: UniProt
Entry: R9NFZ9_9FIRM
LinkDB: R9NFZ9_9FIRM
Original site: R9NFZ9_9FIRM 
ID   R9NFZ9_9FIRM            Unreviewed;       556 AA.
AC   R9NFZ9;
DT   24-JUL-2013, integrated into UniProtKB/TrEMBL.
DT   24-JUL-2013, sequence version 1.
DT   24-JAN-2024, entry version 48.
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=C817_00230 {ECO:0000313|EMBL:EOS81836.1};
OS   Dorea sp. 5-2.
OC   Bacteria; Bacillota; Clostridia; Eubacteriales; Lachnospiraceae; Dorea.
OX   NCBI_TaxID=1235798 {ECO:0000313|EMBL:EOS81836.1, ECO:0000313|Proteomes:UP000014211};
RN   [1] {ECO:0000313|EMBL:EOS81836.1, ECO:0000313|Proteomes:UP000014211}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=5-2 {ECO:0000313|EMBL:EOS81836.1,
RC   ECO:0000313|Proteomes:UP000014211};
RG   The Broad Institute Genomics Platform;
RG   The Broad Institute Genome Sequencing Center for Infectious Disease;
RA   Earl A., Xavier R., Elson C., Duck W., Walker B., Young S., Zeng Q.,
RA   Gargeya S., Fitzgerald M., Haas B., Abouelleil A., Allen A.W., Alvarado L.,
RA   Arachchi H.M., Berlin A.M., Chapman S.B., Gainer-Dewar J., Goldberg J.,
RA   Griggs A., Gujja S., Hansen M., Howarth C., Imamovic A., Ireland A.,
RA   Larimer J., McCowan C., Murphy C., Pearson M., Poon T.W., Priest M.,
RA   Roberts A., Saif S., Shea T., Sisk P., Sykes S., Wortman J., Nusbaum C.,
RA   Birren B.;
RT   "The Genome Sequence of Dorea bacterium 5-2.";
RL   Submitted (APR-2013) 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:EOS81836.1}.
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DR   EMBL; ASTD01000005; EOS81836.1; -; Genomic_DNA.
DR   RefSeq; WP_016217008.1; NZ_KE159715.1.
DR   AlphaFoldDB; R9NFZ9; -.
DR   STRING; 1235798.C817_00230; -.
DR   PATRIC; fig|1235798.3.peg.251; -.
DR   eggNOG; COG0129; Bacteria.
DR   HOGENOM; CLU_014271_4_2_9; -.
DR   OrthoDB; 9807077at2; -.
DR   UniPathway; UPA00047; UER00057.
DR   UniPathway; UPA00049; UER00061.
DR   Proteomes; UP000014211; 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:UP000014211}.
FT   ACT_SITE        468
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT   BINDING         78
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT   BINDING         120
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT   BINDING         121
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         442
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT   MOD_RES         121
FT                   /note="N6-carboxylysine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
SQ   SEQUENCE   556 AA;  58559 MW;  401A8B0735008D38 CRC64;
     MRSDTVTRGK QQAPHRSLFN ALGLTPEEMD RPLVGIVSSY NEIVPGHMNL DKIVNAVKQG
     VAMAGGTPIV FPAIAVCDGI AMGHIGMKYS LVTRDLIADS TEAMALAHQF DALVMVPNCD
     KNVPGLLMAA ARINVPTIFV SGGPMLAGHV KGKKTSLSSM FEAVGANAAG MITDEDLCEF
     ENKTCPTCGS CSGMYTANSM NCLTEVLGMG LGGNGTIPAV YSARIRLAKQ AGMKVMELLE
     KNILPRDIMT EKAILNALTV DMALGCSTNS MLHLPAIAHE IGMDFEIDFA NGISEKTPNL
     CHLAPAGPTY MEDLDEAGGV YAVMAELNKK GLLHTDCMTV TGKTVGENIA HAVNRDPEVI
     RPIDQPYTPT GGLAVLKGNL APDGSVVKRS AVVEEMLVHE GPARVFDCEE DAIDAIKGGK
     IVAGDVVVIR YEGPKGGPGM REMLNPTSAI AGMGLGSSVA LITDGRFSGA SRGASIGHVS
     PEAAVGGPIA LVEEGDIVKI DIPNLRLELD VSEEELAKRR EAWKPREPKV TTGYLARYAA
     MVTSGNRGAI LEIPGK
//
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