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DXS_SYMTH
ID   DXS_SYMTH               Reviewed;         648 AA.
AC   Q67NB6;
DT   31-OCT-2006, integrated into UniProtKB/Swiss-Prot.
DT   11-OCT-2004, sequence version 1.
DT   03-AUG-2022, entry version 107.
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=STH1842;
OS   Symbiobacterium thermophilum (strain T / IAM 14863).
OC   Bacteria; Firmicutes; Clostridia; Eubacteriales; Symbiobacteriaceae;
OC   Symbiobacterium.
OX   NCBI_TaxID=292459;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=T / IAM 14863;
RX   PubMed=15383646; DOI=10.1093/nar/gkh830;
RA   Ueda K., Yamashita A., Ishikawa J., Shimada M., Watsuji T., Morimura K.,
RA   Ikeda H., Hattori M., Beppu T.;
RT   "Genome sequence of Symbiobacterium thermophilum, an uncultivable bacterium
RT   that depends on microbial commensalism.";
RL   Nucleic Acids Res. 32:4937-4944(2004).
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; AP006840; BAD40827.1; -; Genomic_DNA.
DR   RefSeq; WP_011195970.1; NC_006177.1.
DR   AlphaFoldDB; Q67NB6; -.
DR   SMR; Q67NB6; -.
DR   STRING; 292459.STH1842; -.
DR   EnsemblBacteria; BAD40827; BAD40827; STH1842.
DR   KEGG; sth:STH1842; -.
DR   eggNOG; COG1154; Bacteria.
DR   HOGENOM; CLU_009227_1_4_9; -.
DR   OMA; QVGYHAQ; -.
DR   OrthoDB; 566385at2; -.
DR   UniPathway; UPA00064; UER00091.
DR   Proteomes; UP000000417; 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; Reference proteome;
KW   Thiamine biosynthesis; Thiamine pyrophosphate; Transferase.
FT   CHAIN           1..648
FT                   /note="1-deoxy-D-xylulose-5-phosphate synthase"
FT                   /id="PRO_0000256490"
FT   BINDING         72
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         113..115
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         144
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         145..146
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         173
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         173
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
FT   BINDING         363
FT                   /ligand="thiamine diphosphate"
FT                   /ligand_id="ChEBI:CHEBI:58937"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00315"
SQ   SEQUENCE   648 AA;  69789 MW;  236B8497DA0A6D00 CRC64;
     MHLRDLTGPE QLKRLAPAEL AQLAAEIRRV ILETVATNGG HLAPNLGVVE LTLALHIVFD
     SPRDKILWDV SHQSYVHKLL TGRLHQFHTL RQFGGIAGFT DPRESVHDHF HWGHASTSIS
     AAVGMAKARD LAGDDYEVVA VIGDGALTGG MAYEALDHAG HDKTKVIVVL NDNSMSIAPN
     VGGISNYLAR IRTGPSYQRV KHDVAEALRQ IPLIGPQALE LADRLKEGVK HLLVHNMFFE
     DLGFTYLGPV DGHNVSALVD VLRQARAYPG PTVVHVVTTK GKGVPYAEQL PDKFHGGGPF
     DVATGRTGPG SLTYSEVFGN VMCKLAAEDP RVCAITAAMP SGTGLSRFAR QFPDRYFDVG
     IAEQHAVTFA AGLAKGGMRP VFAVYSTFLQ RAYDQVIHDV ALQNLPVTLA IDRGGLVEDG
     ATHQGVFDVA YLRAIPNMVV MAPKDENELQ HMLYTALCHD GPAALRYPRG KAQGVPLDET
     LQPLPIGRGE VMQEGADVAL IGLGTMARVC QEAARLLAEK SISAMVINPR FVKPLDAELL
     LRAGREVGAV VTVEEACLAG GFGSAVLELY AAHGVNARVE RMGIPDEFVD HGQPARYLER
     YGLTPEGVAQ RAEALLLRMR SDLAAQPARR SRSVRRLSGA KAAGNGET
 
 
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