ID   DXS_ACTPJ               Reviewed;         617 AA.
AC   B0BSL0;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   26-FEB-2008, sequence version 1.
DT   10-JUN-2026, entry version 96.
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};
GN   OrderedLocusNames=APJL_0208;
OS   Actinobacillus pleuropneumoniae serotype 3 (strain JL03).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
OC   Pasteurellales; Pasteurellaceae; Actinobacillus.
OX   NCBI_TaxID=434271;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=JL03;
RX   PubMed=18197260; DOI=10.1371/journal.pone.0001450;
RA   Xu Z., Zhou Y., Li L., Zhou R., Xiao S., Wan Y., Zhang S., Wang K., Li W.,
RA   Li L., Jin H., Kang M., Dalai B., Li T., Liu L., Cheng Y., Zhang L., Xu T.,
RA   Zheng H., Pu S., Wang B., Gu W., Zhang X.L., Zhu G.-F., Wang S.,
RA   Zhao G.-P., Chen H.;
RT   "Genome biology of Actinobacillus pleuropneumoniae JL03, an isolate of
RT   serotype 3 prevalent in China.";
RL   PLoS ONE 3:E1450-E1450(2008).
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 + pyruvate + H(+) = 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; Evidence={ECO:0000255|HAMAP-
CC         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; CP000687; ABY68812.1; -; Genomic_DNA.
DR   RefSeq; WP_005595991.1; NC_010278.1.
DR   AlphaFoldDB; B0BSL0; -.
DR   SMR; B0BSL0; -.
DR   GeneID; 48598354; -.
DR   KEGG; apj:APJL_0208; -.
DR   HOGENOM; CLU_009227_1_4_6; -.
DR   UniPathway; UPA00064; UER00091.
DR   GO; GO:0005829; C:cytosol; IEA:TreeGrafter.
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:0019288; P:isopentenyl diphosphate biosynthetic process, methylerythritol 4-phosphate pathway; IEA:TreeGrafter.
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   CDD; cd07033; TPP_PYR_DXS_TK_like; 1.
DR   FunFam; 3.40.50.920:FF:000002; 1-deoxy-D-xylulose-5-phosphate synthase; 1.
DR   FunFam; 3.40.50.970:FF:000005; 1-deoxy-D-xylulose-5-phosphate synthase; 1.
DR   Gene3D; 3.40.50.920; -; 1.
DR   Gene3D; 3.40.50.970; -; 2.
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; IPR049557; Transketolase_CS.
DR   NCBIfam; TIGR00204; dxs; 1.
DR   NCBIfam; NF003933; PRK05444.2-2; 1.
DR   PANTHER; PTHR43322; 1-D-DEOXYXYLULOSE 5-PHOSPHATE SYNTHASE-RELATED; 1.
DR   PANTHER; PTHR43322:SF5; 1-DEOXY-D-XYLULOSE-5-PHOSPHATE SYNTHASE, CHLOROPLASTIC; 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; Thiamin diphosphate-binding fold (THDP-binding); 2.
DR   SUPFAM; SSF52922; TK C-terminal domain-like; 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..617
FT                   /note="1-deoxy-D-xylulose-5-phosphate synthase"
FT                   /id="PRO_1000115716"
FT   BINDING         77
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         118..120
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         149
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         150..151
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         178
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         178
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         286
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         367
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
SQ   SEQUENCE   617 AA;  67842 MW;  5573F10785EE1476 CRC64;
     MQNKYPLLSQ INSPEDLRLL AKEQLQSVAD ELRAYLLESV SQTSGHLASG LGVVELTVAL
     HYVYQTPFDQ LIWDVGHQAY PHKILTGRRD QMHTIRQKNG IHPFPWREES LYDVLSVGHS
     STSISAGVGI AVAAEKENAG RKTVCVIGDG AITAGMAFEA MNHAGALHTD MLVILNDNEM
     SISENVGALN NHLARIFSGS IYTTVRDGSK KVLDKVPTIK NFMKKSEEHM KGVISPESTL
     FEELGFNYIG PIDGHNIDEL VKTLSNMREL KGPQFLHIRT KKGKGYEPAE NDPIGYHGVP
     KFDPTCGQLP KSKTIPTYSD IFGNWLCEMA EQDSKLIGIT PAMREGSGMV EFSKRFPEQY
     FDVAIAEQHA VTFGAGLAIA GYKPVVAIYS SFLQRAYDQL IHDVAIQNLP VIFAIDRAGI
     VGADGQTHQG AFDVSFMRCI PNMTIMCPSD ENEMRQMLYT AYRMNTPTAV RYPRGNAQGV
     ALAPMQALEV GKGKLIQQGQ KVAILNFGPL LNEARIVAEK HNYTLADMRF VKPLDEQLVA
     ELADSHELLV TLEENAIQGG AGSAVNEYLQ KIGKIRPLVM LGIPDFFVPQ ATQAESYADL
     GLDAAGIEQR IQAVVNQ
//