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Entry: A0A1C3EFJ2_9GAMM
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ID   A0A1C3EFJ2_9GAMM        Unreviewed;       613 AA.
AC   A0A1C3EFJ2;
DT   02-NOV-2016, integrated into UniProtKB/TrEMBL.
DT   02-NOV-2016, sequence version 1.
DT   24-JAN-2024, entry version 28.
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=A8L45_14365 {ECO:0000313|EMBL:ODA32001.1};
OS   Veronia pacifica.
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Vibrionales; Vibrionaceae;
OC   Veronia.
OX   NCBI_TaxID=1080227 {ECO:0000313|EMBL:ODA32001.1, ECO:0000313|Proteomes:UP000094936};
RN   [1] {ECO:0000313|EMBL:ODA32001.1, ECO:0000313|Proteomes:UP000094936}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CAIM 1920 {ECO:0000313|EMBL:ODA32001.1,
RC   ECO:0000313|Proteomes:UP000094936};
RA   Gomez-Gil B., Enciso-Ibarra J.;
RT   "Genomic Taxonomy of the Vibrionaceae.";
RL   Submitted (MAY-2016) 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:ODA32001.1}.
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DR   EMBL; LYBM01000027; ODA32001.1; -; Genomic_DNA.
DR   RefSeq; WP_068903469.1; NZ_LYBM01000027.1.
DR   AlphaFoldDB; A0A1C3EFJ2; -.
DR   STRING; 1080227.A8L45_14365; -.
DR   OrthoDB; 9807077at2; -.
DR   UniPathway; UPA00047; UER00057.
DR   UniPathway; UPA00049; UER00061.
DR   Proteomes; UP000094936; 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:UP000094936}.
FT   ACT_SITE        517
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT   BINDING         81
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT   BINDING         123
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                   /note="via carbamate group"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT   BINDING         491
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT   MOD_RES         124
FT                   /note="N6-carboxylysine"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
SQ   SEQUENCE   613 AA;  65728 MW;  C6F58C3288959EC3 CRC64;
     MPKYRSSTTT HGRNMAGARA LWRATGVKDE DFGKPIIAVV NSFTQFVPGH VHLKDLGQLV
     AGEIEKAGGI AKEFNTIAVD DGIAMGHGGM LYSLPSRELI ADSVEYMVNA HCADAMVCIS
     NCDKITPGML MAAMRLNIPA IFVSGGPMEA GKTKLSDQIL KLDLVDAMIQ GADPNVSDEQ
     SEQIERSACP TCGSCSGMFT ANSMNCLTEA LGLSQPGNGS LLATHADRET LFRTAGQRVV
     ELTKRYYEQD DETALPRNIA TKQAFENAMA LDIAMGGSTN TVLHLLAAAQ EGGVDFNMSD
     IDRMSRIVPH LCKVAPSTQK YHMEDVHRAG GVYGILGELG RANLLNTSVN NVLGKTLADT
     LKEYDIMVTE NEAIDSFYRA GPAGIRTTKA FSQDCRWDTV DNDRENGCIR TKENAFSQDG
     GLAVLSGNIA LDGCIVKTAS VDKDNLVFRG PAHVFESQDD AVNGILSSEV KSGEVVVIRY
     EGPKGGPGMQ EMLYPTTYLK SMGLGKECAL LTDGRFSGGT SGLSIGHVSP EAANGGTIAL
     VEQGDIIAID IPNRSIVLEV DEQELARRAQ KLDEIGWKPA NRKRQVSFAL KAYASMATSA
     DKGAVRDKSK LEE
//
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