ILVD_NEIG1
ID ILVD_NEIG1 Reviewed; 619 AA.
AC Q5F8G6;
DT 07-MAR-2006, integrated into UniProtKB/Swiss-Prot.
DT 15-MAR-2005, sequence version 1.
DT 03-AUG-2022, entry version 90.
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=NGO0809;
OS Neisseria gonorrhoeae (strain ATCC 700825 / FA 1090).
OC Bacteria; Proteobacteria; Betaproteobacteria; Neisseriales; Neisseriaceae;
OC Neisseria.
OX NCBI_TaxID=242231;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700825 / FA 1090;
RA Lewis L.A., Gillaspy A.F., McLaughlin R.E., Gipson M., Ducey T.F.,
RA Ownbey T., Hartman K., Nydick C., Carson M.B., Vaughn J., Thomson C.,
RA Song L., Lin S., Yuan X., Najar F., Zhan M., Ren Q., Zhu H., Qi S.,
RA Kenton S.M., Lai H., White J.D., Clifton S., Roe B.A., Dyer D.W.;
RT "The complete genome sequence of Neisseria gonorrhoeae.";
RL Submitted (MAR-2003) 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: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; AE004969; AAW89521.1; -; Genomic_DNA.
DR RefSeq; WP_003688598.1; NC_002946.2.
DR RefSeq; YP_207933.1; NC_002946.2.
DR AlphaFoldDB; Q5F8G6; -.
DR SMR; Q5F8G6; -.
DR STRING; 242231.NGO_0809; -.
DR EnsemblBacteria; AAW89521; AAW89521; NGO_0809.
DR KEGG; ngo:NGO_0809; -.
DR PATRIC; fig|242231.10.peg.958; -.
DR HOGENOM; CLU_014271_4_2_4; -.
DR OMA; TQGRNMA; -.
DR UniPathway; UPA00047; UER00057.
DR UniPathway; UPA00049; UER00061.
DR Proteomes; UP000000535; 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..619
FT /note="Dihydroxy-acid dehydratase"
FT /id="PRO_0000225398"
FT ACT_SITE 520
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 198
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00012"
FT BINDING 494
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 619 AA; 66842 MW; CE3227FFF3065E8E CRC64;
MPEYRSKTST HGRNMAGARA LWRATGVMET DFGKPIIAVA NSFTQFVPGH VHLHNMGQLV
AREIEKAGAI AKEFNTIAID DGIAMGHSGM LYSLPSRDLI ADSIEYMVNA HCADALVCIS
NCDKITPGML IAAMRLNIPT IFVSGGPMEA GKVIGVANIQ PERRLDLIDA MIESADDNVS
NRQVEEVEQN ACPTCGSCSG MFTANSMNCL TEALGLSLPG NGSYLATHAG RKELFLEAGR
MIVEITKRYY EQDDETVLPR SIATKKAFEN AMTMDIAMGG STNTILHLLA VANEAGVDFK
MADIDRLSRV VPCICKTAPN NHDYYMEDVH RAGGIFAILK ELDKAGKLHT DVYTIHAPTL
KDAIEKWDVT NPENTRAIER FKAAPGGVRT TQAFSQNRIW KTLDLDREKG CIRDVAHAYS
QDGGLAVLFG NIAERGCVVK TAGVDESILK FTGRARVFES QEAAVEGILG NQIVAGNIVI
IRYEGPKGGP GMQEMLYPTS YLKSKGLGKA CALLTDGRFS GGTSGLSIGH ASPEAAEGGA
IGLVHEGDTI EIDIPKRSIR LVISDEELAA RRAEMEARGS KAWKPENRDR YVSAALRAYG
AMATSADKGA VRDVSQIER
