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ILVD_PHOLL
ID   ILVD_PHOLL              Reviewed;         616 AA.
AC   Q7MYJ5;
DT   15-DEC-2003, integrated into UniProtKB/Swiss-Prot.
DT   15-DEC-2003, sequence version 1.
DT   03-AUG-2022, entry version 109.
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}; OrderedLocusNames=plu4682;
OS   Photorhabdus laumondii subsp. laumondii (strain DSM 15139 / CIP 105565 /
OS   TT01).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Morganellaceae; Photorhabdus.
OX   NCBI_TaxID=243265;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 15139 / CIP 105565 / TT01;
RX   PubMed=14528314; DOI=10.1038/nbt886;
RA   Duchaud E., Rusniok C., Frangeul L., Buchrieser C., Givaudan A.,
RA   Taourit S., Bocs S., Boursaux-Eude C., Chandler M., Charles J.-F.,
RA   Dassa E., Derose R., Derzelle S., Freyssinet G., Gaudriault S., Medigue C.,
RA   Lanois A., Powell K., Siguier P., Vincent R., Wingate V., Zouine M.,
RA   Glaser P., Boemare N., Danchin A., Kunst F.;
RT   "The genome sequence of the entomopathogenic bacterium Photorhabdus
RT   luminescens.";
RL   Nat. Biotechnol. 21:1307-1313(2003).
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; BX571874; CAE17054.1; -; Genomic_DNA.
DR   RefSeq; WP_011148752.1; NC_005126.1.
DR   AlphaFoldDB; Q7MYJ5; -.
DR   SMR; Q7MYJ5; -.
DR   STRING; 243265.plu4682; -.
DR   EnsemblBacteria; CAE17054; CAE17054; plu4682.
DR   GeneID; 24169009; -.
DR   KEGG; plu:plu4682; -.
DR   eggNOG; COG0129; Bacteria.
DR   HOGENOM; CLU_014271_4_3_6; -.
DR   OMA; TQGRNMA; -.
DR   OrthoDB; 193579at2; -.
DR   BioCyc; PLUM243265:PLU_RS23155-MON; -.
DR   UniPathway; UPA00047; UER00057.
DR   UniPathway; UPA00049; UER00061.
DR   Proteomes; UP000002514; 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; -; 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..616
FT                   /note="Dihydroxy-acid dehydratase"
FT                   /id="PRO_0000103488"
FT   ACT_SITE        517
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         195
FT                   /ligand="[2Fe-2S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:190135"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00012"
FT   BINDING         491
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   616 AA;  65786 MW;  8150D713D04D4172 CRC64;
     MPKYRSATTT HGRNMAGARA LWRATGMTDA DFGKPIIAVV NSFTQFVPGH VHLRDLGKLV
     AEQIEASGGV AKEFNTIAVD DGIAMGHGGM LYSLPSRELI ADSVEYMVNA HCADAMVCIS
     NCDKITPGML MAALRLNIPA IFVSGGPMEA GKTKLSDQII KLDLIDAMIQ GANPKVSDED
     SNQIERSACP TCGSCSGMFT ANSMNCLTEA LGLSQPGNGS LLATHADRKA LFLNAGKRIV
     ELTKRYYEQN DDSALPRSIA TKAAFENAMM LDIAMGGSTN TVLHLLAAAQ EGEVDFTMAD
     IDRLSRQIPH LCKVAPSTQK YHMEDVHRAG GVIGILGELD RAGLLNRQVK NVLGLDLLQT
     LNQYDVMQTV DESVKEMYSA GPAGIRTTQA FSQDCRWPSL DTDRVEGCIR DIEHAYSRDG
     GLAVLFGNLA IDGCIVKTAG VDEGSLTFRG PAKVYESQED AVDAILGGKV VAGDVVVIRY
     EGPKGGPGMQ EMLYPTTYLK SVGLGKSCAL ITDGRFSGGT SGLSIGHVSP EAANGGLIGL
     VQDGDIIDID IPLRKIRLDV DERILATRKE VEFARGDKSW TPKARERQVS LALRAYASLA
     TSADKGAVRD KSKLGG
 
 
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