ID A0A1X1XN18_9MYCO Unreviewed; 567 AA.
AC A0A1X1XN18;
DT 05-JUL-2017, integrated into UniProtKB/TrEMBL.
DT 05-JUL-2017, sequence version 1.
DT 27-MAR-2024, entry version 31.
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 ECO:0000313|EMBL:BBX98729.1};
GN ORFNames=AWC15_08800 {ECO:0000313|EMBL:ORW00180.1}, MLAC_40230
GN {ECO:0000313|EMBL:BBX98729.1};
OS Mycobacterium lacus.
OC Bacteria; Actinomycetota; Actinomycetes; Mycobacteriales; Mycobacteriaceae;
OC Mycobacterium.
OX NCBI_TaxID=169765 {ECO:0000313|EMBL:BBX98729.1, ECO:0000313|Proteomes:UP000466396};
RN [1] {ECO:0000313|EMBL:ORW00180.1, ECO:0000313|Proteomes:UP000193202}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 44577 {ECO:0000313|EMBL:ORW00180.1,
RC ECO:0000313|Proteomes:UP000193202};
RA Tarcisio F., Conor M., Antonella G., Elisabetta G., Giulia F.S., Sara T.,
RA Anna F., Clotilde B., Roberto B., Veronica D.S., Fabio R., Monica P.,
RA Olivier J., Enrico T., Nicola S.;
RT "The new phylogeny of the genus Mycobacterium.";
RL Submitted (JAN-2016) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:BBX98729.1, ECO:0000313|Proteomes:UP000466396}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JCM 15657 {ECO:0000313|EMBL:BBX98729.1,
RC ECO:0000313|Proteomes:UP000466396};
RX PubMed=31287781;
RA Matsumoto Y., Kinjo T., Motooka D., Nabeya D., Jung N., Uechi K., Horii T.,
RA Iida T., Fujita J., Nakamura S.;
RT "Comprehensive subspecies identification of 175 nontuberculous mycobacteria
RT species based on 7547 genomic profiles.";
RL Emerg. Microbes Infect. 8:1043-1053(2019).
RN [3] {ECO:0000313|EMBL:BBX98729.1}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=JCM 15657 {ECO:0000313|EMBL:BBX98729.1};
RA Matsumoto Y., Motooka D., Nakamura S.;
RL Submitted (FEB-2020) 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}.
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DR EMBL; AP022581; BBX98729.1; -; Genomic_DNA.
DR EMBL; LQPF01000174; ORW00180.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1X1XN18; -.
DR STRING; 169765.AWC15_08800; -.
DR KEGG; mlj:MLAC_40230; -.
DR OrthoDB; 9807077at2; -.
DR UniPathway; UPA00047; UER00057.
DR UniPathway; UPA00049; UER00061.
DR Proteomes; UP000193202; Unassembled WGS sequence.
DR Proteomes; UP000466396; 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; 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; PTHR21000; DIHYDROXY-ACID DEHYDRATASE DAD; 1.
DR PANTHER; PTHR21000:SF5; DIHYDROXY-ACID DEHYDRATASE, MITOCHONDRIAL; 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:UP000466396}.
FT ACT_SITE 483
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT BINDING 56
FT /ligand="[2Fe-2S] cluster"
FT /ligand_id="ChEBI:CHEBI:190135"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT BINDING 88
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT BINDING 130
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT BINDING 131
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 457
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
FT MOD_RES 131
FT /note="N6-carboxylysine"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00012"
SQ SEQUENCE 567 AA; 58867 MW; E975D30A639FB3D5 CRC64;
MPKTTAADIK PRSRDVTDGL EKAAARGMLR AVGMEDEDFG KPQIGVASSW NEITPCNLSL
DRLAKAVKEG VFSAGGYPLE FGTISVSDGI SMGHEGMHFS LVSREVIADS VETVMQAERL
DGSVLLAGCD KSLPGMLMAA ARLDLAAVFL YAGSILPGRA KLSDGTERDV TIIDAFEAVG
ACARGLMSRA DVDAIERAIC PGEGACGGMY TANTMASAAE ALGMSLPGSA APPATDRRRD
GFARRSGQAV IELLRRGITA RDILTKEAFE NAIAVVMAFG GSTNAVLHLL AIAQEAGVAL
SLEDFSRIGS RVPHLADVKP FGRHVMVDVD HIGGVPVVMK TLLDAGLLNG DCLTVTGQTM
AENLAAIAPP DPDGKVLRAL ANPIHPTGGI TILRGSLAPD GAVVKTAGFD SDVFEGTARV
FDGERAALDA LEDGTITKGD AVVIRYEGPK GGPGMREMLA ITGAIKGAEL GKDVLLLTDG
RFSGGTTGLC VGHIAPEAVD GGPIAFLRDG DRIRLDVAGR TLDVLTDPAE FAARQKDFTP
PRPRYTTGVL AKYVKLVGSA SFGAVCG
//
