ID G8TWX2_SULAD Unreviewed; 556 AA.
AC G8TWX2;
DT 22-FEB-2012, integrated into UniProtKB/TrEMBL.
DT 22-FEB-2012, sequence version 1.
DT 27-MAR-2024, entry version 61.
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 OrderedLocusNames=Sulac_0251 {ECO:0000313|EMBL:AEW03820.1};
OS Sulfobacillus acidophilus (strain ATCC 700253 / DSM 10332 / NAL).
OC Bacteria; Bacillota; Clostridia; Eubacteriales;
OC Clostridiales Family XVII. Incertae Sedis; Sulfobacillus.
OX NCBI_TaxID=679936 {ECO:0000313|EMBL:AEW03820.1, ECO:0000313|Proteomes:UP000005439};
RN [1] {ECO:0000313|Proteomes:UP000005439}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700253 / DSM 10332 / NAL
RC {ECO:0000313|Proteomes:UP000005439};
RA Lucas S., Han J., Lapidus A., Bruce D., Goodwin L., Pitluck S., Peters L.,
RA Kyrpides N., Mavromatis K., Ivanova N., Mikhailova N., Chertkov O.,
RA Saunders E., Detter J.C., Tapia R., Han C., Land M., Hauser L.,
RA Markowitz V., Cheng J.-F., Hugenholtz P., Woyke T., Wu D., Pukall R.,
RA Gehrich-Schroeter G., Schneider S., Klenk H.-P., Eisen J.A.;
RT "The complete genome of chromosome of Sulfobacillus acidophilus DSM
RT 10332.";
RL Submitted (DEC-2011) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:AEW03820.1, ECO:0000313|Proteomes:UP000005439}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700253 / DSM 10332 / NAL
RC {ECO:0000313|Proteomes:UP000005439};
RX PubMed=23407703; DOI=10.4056/sigs.2736042;
RA Anderson I., Chertkov O., Chen A., Saunders E., Lapidus A., Nolan M.,
RA Lucas S., Hammon N., Deshpande S., Cheng J.F., Han C., Tapia R.,
RA Goodwin L.A., Pitluck S., Liolios K., Pagani I., Ivanova N., Mikhailova N.,
RA Pati A., Palaniappan K., Land M., Pan C., Rohde M., Pukall R., Goker M.,
RA Detter J.C., Woyke T., Bristow J., Eisen J.A., Markowitz V., Hugenholtz P.,
RA Kyrpides N.C., Klenk H.P., Mavromatis K.;
RT "Complete genome sequence of the moderately thermophilic mineral-sulfide-
RT oxidizing firmicute Sulfobacillus acidophilus type strain (NAL(T)).";
RL Stand. Genomic Sci. 6:1-13(2012).
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; CP003179; AEW03820.1; -; Genomic_DNA.
DR AlphaFoldDB; G8TWX2; -.
DR SMR; G8TWX2; -.
DR STRING; 679936.Sulac_0251; -.
DR KEGG; sap:Sulac_0251; -.
DR PATRIC; fig|679936.5.peg.256; -.
DR HOGENOM; CLU_014271_4_2_9; -.
DR UniPathway; UPA00047; UER00057.
DR UniPathway; UPA00049; UER00061.
DR Proteomes; UP000005439; 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; 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:UP000005439}.
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; 59633 MW; AB45B0BBE9FA1F39 CRC64;
MRSDTIKRGI DRAPHRSLLR AAGVKDHEWD RPFIAIANSF VEIIPGHTHL ARIGRLIAEA
VREAGGVPFE FNTIGVDDGI AMGHFGMRYS LPSREIIADS IETMVRAHAF DGMICIPNCD
KIVPGMLMGA LRVNIPTIFV SGGPMAAGRW NGRAVDLISV FEGVGAVTAG TMSPDQLMEL
EAAACPSCGS CSGMFTANSM NCLSEALGVA LPGNGSILAI DPRRDELFKE AGRRIVALAK
ADVKIRDIVT ADAIWDAFAL DMAMGGSTNT VLHTLALIQE AGIDFPLERI NEISQKVPHL
CKVSPASHWH MEDVERAGGI SAILGELSRI DGLLHPDRPT VTGEPFSTYF EGHHSKDPEV
IRSLETAYRS DGGLAILMGS LAPRGAVIKT AAIETGQDIF EGPARVFDSE EAALEGIRAG
IEPGTVVVIR YEGPKGGPGM PEMLSPTSLL MGMGRGHDVA LITDGRFSGG TRGFCVGHVS
PEAASGGPIA LVRDGDIIRI DIPARRMDLL VEEDELERRR QSLPPFQPKV QEGWLRRYSW
FVTSADTGAV LSHDPT
//
