DXS_HAEI8
ID DXS_HAEI8 Reviewed; 625 AA.
AC Q4QKG6;
DT 31-OCT-2006, integrated into UniProtKB/Swiss-Prot.
DT 19-JUL-2005, sequence version 1.
DT 03-AUG-2022, entry version 94.
DE RecName: Full=1-deoxy-D-xylulose-5-phosphate synthase {ECO:0000255|HAMAP-Rule:MF_00315};
DE EC=2.2.1.7 {ECO:0000255|HAMAP-Rule:MF_00315};
DE AltName: Full=1-deoxyxylulose-5-phosphate synthase {ECO:0000255|HAMAP-Rule:MF_00315};
DE Short=DXP synthase {ECO:0000255|HAMAP-Rule:MF_00315};
DE Short=DXPS {ECO:0000255|HAMAP-Rule:MF_00315};
GN Name=dxs {ECO:0000255|HAMAP-Rule:MF_00315}; OrderedLocusNames=NTHI1691;
OS Haemophilus influenzae (strain 86-028NP).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC Pasteurellaceae; Haemophilus.
OX NCBI_TaxID=281310;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=86-028NP;
RX PubMed=15968074; DOI=10.1128/jb.187.13.4627-4636.2005;
RA Harrison A., Dyer D.W., Gillaspy A., Ray W.C., Mungur R., Carson M.B.,
RA Zhong H., Gipson J., Gipson M., Johnson L.S., Lewis L., Bakaletz L.O.,
RA Munson R.S. Jr.;
RT "Genomic sequence of an otitis media isolate of nontypeable Haemophilus
RT influenzae: comparative study with H. influenzae serotype d, strain KW20.";
RL J. Bacteriol. 187:4627-4636(2005).
CC -!- FUNCTION: Catalyzes the acyloin condensation reaction between C atoms 2
CC and 3 of pyruvate and glyceraldehyde 3-phosphate to yield 1-deoxy-D-
CC xylulose-5-phosphate (DXP). {ECO:0000255|HAMAP-Rule:MF_00315}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=D-glyceraldehyde 3-phosphate + H(+) + pyruvate = 1-deoxy-D-
CC xylulose 5-phosphate + CO2; Xref=Rhea:RHEA:12605, ChEBI:CHEBI:15361,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:16526, ChEBI:CHEBI:57792,
CC ChEBI:CHEBI:59776; EC=2.2.1.7; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_00315};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00315};
CC Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00315};
CC -!- COFACTOR:
CC Name=thiamine diphosphate; Xref=ChEBI:CHEBI:58937;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00315};
CC Note=Binds 1 thiamine pyrophosphate per subunit. {ECO:0000255|HAMAP-
CC Rule:MF_00315};
CC -!- PATHWAY: Metabolic intermediate biosynthesis; 1-deoxy-D-xylulose 5-
CC phosphate biosynthesis; 1-deoxy-D-xylulose 5-phosphate from D-
CC glyceraldehyde 3-phosphate and pyruvate: step 1/1. {ECO:0000255|HAMAP-
CC Rule:MF_00315}.
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00315}.
CC -!- SIMILARITY: Belongs to the transketolase family. DXPS subfamily.
CC {ECO:0000255|HAMAP-Rule:MF_00315}.
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DR EMBL; CP000057; AAX88481.1; -; Genomic_DNA.
DR RefSeq; WP_011272595.1; NC_007146.2.
DR AlphaFoldDB; Q4QKG6; -.
DR SMR; Q4QKG6; -.
DR BindingDB; Q4QKG6; -.
DR ChEMBL; CHEMBL3559646; -.
DR EnsemblBacteria; AAX88481; AAX88481; NTHI1691.
DR KEGG; hit:NTHI1691; -.
DR HOGENOM; CLU_009227_1_4_6; -.
DR OMA; QVGYHAQ; -.
DR OrthoDB; 566385at2; -.
DR UniPathway; UPA00064; UER00091.
DR Proteomes; UP000002525; Chromosome.
DR GO; GO:0008661; F:1-deoxy-D-xylulose-5-phosphate synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0030976; F:thiamine pyrophosphate binding; IEA:UniProtKB-UniRule.
DR GO; GO:0052865; P:1-deoxy-D-xylulose 5-phosphate biosynthetic process; IEA:UniProtKB-UniPathway.
DR GO; GO:0016114; P:terpenoid biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0009228; P:thiamine biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd02007; TPP_DXS; 1.
DR Gene3D; 3.40.50.920; -; 1.
DR HAMAP; MF_00315; DXP_synth; 1.
DR InterPro; IPR005477; Dxylulose-5-P_synthase.
DR InterPro; IPR029061; THDP-binding.
DR InterPro; IPR009014; Transketo_C/PFOR_II.
DR InterPro; IPR005475; Transketolase-like_Pyr-bd.
DR InterPro; IPR020826; Transketolase_BS.
DR InterPro; IPR033248; Transketolase_C.
DR InterPro; IPR005474; Transketolase_N.
DR PANTHER; PTHR43322; PTHR43322; 1.
DR Pfam; PF13292; DXP_synthase_N; 1.
DR Pfam; PF02779; Transket_pyr; 1.
DR Pfam; PF02780; Transketolase_C; 1.
DR SMART; SM00861; Transket_pyr; 1.
DR SUPFAM; SSF52518; SSF52518; 2.
DR SUPFAM; SSF52922; SSF52922; 1.
DR TIGRFAMs; TIGR00204; dxs; 1.
DR PROSITE; PS00801; TRANSKETOLASE_1; 1.
DR PROSITE; PS00802; TRANSKETOLASE_2; 1.
PE 3: Inferred from homology;
KW Isoprene biosynthesis; Magnesium; Metal-binding; Thiamine biosynthesis;
KW Thiamine pyrophosphate; Transferase.
FT CHAIN 1..625
FT /note="1-deoxy-D-xylulose-5-phosphate synthase"
FT /id="PRO_0000256427"
FT BINDING 80
FT /ligand="thiamine diphosphate"
FT /ligand_id="ChEBI:CHEBI:58937"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT BINDING 121..123
FT /ligand="thiamine diphosphate"
FT /ligand_id="ChEBI:CHEBI:58937"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT BINDING 152
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT BINDING 153..154
FT /ligand="thiamine diphosphate"
FT /ligand_id="ChEBI:CHEBI:58937"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT BINDING 181
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT BINDING 181
FT /ligand="thiamine diphosphate"
FT /ligand_id="ChEBI:CHEBI:58937"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT BINDING 290
FT /ligand="thiamine diphosphate"
FT /ligand_id="ChEBI:CHEBI:58937"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT BINDING 371
FT /ligand="thiamine diphosphate"
FT /ligand_id="ChEBI:CHEBI:58937"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
SQ SEQUENCE 625 AA; 68591 MW; 0036F6314F93B6B5 CRC64;
MTNNMNNYPL LSLINSPEDL RLLNKDQLPQ LCQELRAYLL ESVSQTSGHL ASGLGTVELT
VALHYVYKTP FDQLIWDVGH QAYPHKILTG RREQMSTIRQ KDGIHPFPWR EESEFDVLSV
GHSSTSISAG LGIAVAAERE NAGRKTVCVI GDGAITAGMA FEALNHAGAL HTDMLVILND
NEMSISENVG ALNNHLARIF SGSLYSTLRD GSKKILDKVP PIKNFMKKTE EHMKGVMFSP
ESTLFEELGF NYIGPVDGHN IDELVAMLTN MRNLKGPQFL HIKTKKGKGY APAEKDPIGF
HGVPKFDPIS GELPKNNSKP TYSKIFGDWL CEMAEKDAKI IGITPAMREG SGMVEFSQRF
PKQYFDVAIA EQHTVTFATG LAIGGYKPVV AIYSTFLQRA YDQLIHDVAI QNLPVLFAID
RAGIVGADGA THQGAFDISF MRCIPNMIIM TPSDENECRQ MLYTGYQCGK PAAVRYPRGN
AVGVKLTPLE MLPIGKSRLI RKGQKIAILN FGTLLPSALE LSEKLNATVV DMRFVKPIDI
EMINVLAQTH DYLVTLEENA IQGGAGSAVA EVLNSSGKST ALLQLGLPDY FIPQATRQEA
LADLGLDTKG IEEKILNFIA KQGNL
