ID   DXS_CHLTA               Reviewed;         640 AA.
AC   Q3KM28;
DT   31-OCT-2006, integrated into UniProtKB/Swiss-Prot.
DT   08-NOV-2005, sequence version 1.
DT   03-AUG-2022, entry version 91.
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=CTA_0359;
OS   Chlamydia trachomatis serovar A (strain ATCC VR-571B / DSM 19440 / HAR-13).
OC   Bacteria; Chlamydiae; Chlamydiales; Chlamydiaceae;
OC   Chlamydia/Chlamydophila group; Chlamydia.
OX   NCBI_TaxID=315277;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC VR-571B / DSM 19440 / HAR-13;
RX   PubMed=16177312; DOI=10.1128/iai.73.10.6407-6418.2005;
RA   Carlson J.H., Porcella S.F., McClarty G., Caldwell H.D.;
RT   "Comparative genomic analysis of Chlamydia trachomatis oculotropic and
RT   genitotropic strains.";
RL   Infect. Immun. 73:6407-6418(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; CP000051; AAX50594.1; -; Genomic_DNA.
DR   RefSeq; WP_011324685.1; NC_007429.1.
DR   AlphaFoldDB; Q3KM28; -.
DR   SMR; Q3KM28; -.
DR   EnsemblBacteria; AAX50594; AAX50594; CTA_0359.
DR   KEGG; cta:CTA_0359; -.
DR   HOGENOM; CLU_009227_1_4_0; -.
DR   OMA; QVGYHAQ; -.
DR   UniPathway; UPA00064; UER00091.
DR   Proteomes; UP000002532; 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; 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.
PE   3: Inferred from homology;
KW   Isoprene biosynthesis; Magnesium; Metal-binding; Thiamine biosynthesis;
KW   Thiamine pyrophosphate; Transferase.
FT   CHAIN           1..640
FT                   /note="1-deoxy-D-xylulose-5-phosphate synthase"
FT                   /id="PRO_0000256398"
FT   BINDING         75
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         117..119
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         146
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         147..148
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         175
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         175
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         370
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
SQ   SEQUENCE   640 AA;  70786 MW;  0D45A1CBA81F66D1 CRC64;
     MTYSLLPHIH SPQDLHALSL DKLPVLCDEI RNKIIESLSL TGGHLASNLG GVELTVALHY
     VFSSPDDQFI FDVGHQSYVH KLLTGRNTEA FSNIRHDNGL SGFTTPQESN HDIFFSGHAG
     NALSLALGLA KGSSNSSSHI LPILGDAAFS CGLTLEALNN IPADLSKFII VLNDNQMSIS
     ENVGNIPQGI SHWMYPQKIS KLSQKIHSWI QNLPSFLHKK KTLSHKVDIA LKSLSHPLFE
     QFGLHYVGPI DGHNVKKLVQ ALQMIKDQPQ PILFHVCTVK GNGLAEAERD PIRYHGVKAH
     FQNTSLKKTS GNVELQTPIS FPQHAGNILC RLGKKYPQLQ VVTPAMSLGS CLEDFRKQFP
     DRFTDVGIAE GHAVTFSAGI ARSGTPVCCS IYSTFLHRAM DNVFHDVCMQ ELPVIFAIDR
     AGLAFHDGRS HHGIYDLGFL CSMPNMVICQ PRNALVLERL FFSSLLWKSP CAIRYPNIPA
     NEKASNSFFP FSPILPGEAE ILCQGDDLLL IALGHMCNTA LTVKEHLLDY GISTTVVDPI
     FIKPLDRKLL QSLLTHHSKV IILEEHSIHG GLGSEFLLFL NQHNIKADVL SLGVPDMFIP
     HGNPETILNL IGLTSDHITQ RILSHFKFFT PIPIERFFKA