ID TYSY_STRZP Reviewed; 279 AA.
AC C1CJD5;
DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT 26-MAY-2009, sequence version 1.
DT 27-MAR-2024, entry version 72.
DE RecName: Full=Thymidylate synthase {ECO:0000255|HAMAP-Rule:MF_00008};
DE Short=TS {ECO:0000255|HAMAP-Rule:MF_00008};
DE Short=TSase {ECO:0000255|HAMAP-Rule:MF_00008};
DE EC=2.1.1.45 {ECO:0000255|HAMAP-Rule:MF_00008};
GN Name=thyA {ECO:0000255|HAMAP-Rule:MF_00008}; OrderedLocusNames=SPP_0690;
OS Streptococcus pneumoniae (strain P1031).
OC Bacteria; Bacillota; Bacilli; Lactobacillales; Streptococcaceae;
OC Streptococcus.
OX NCBI_TaxID=488223;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=P1031;
RX PubMed=21034474; DOI=10.1186/gb-2010-11-10-r107;
RA Donati C., Hiller N.L., Tettelin H., Muzzi A., Croucher N.J.,
RA Angiuoli S.V., Oggioni M., Dunning Hotopp J.C., Hu F.Z., Riley D.R.,
RA Covacci A., Mitchell T.J., Bentley S.D., Kilian M., Ehrlich G.D.,
RA Rappuoli R., Moxon E.R., Masignani V.;
RT "Structure and dynamics of the pan-genome of Streptococcus pneumoniae and
RT closely related species.";
RL Genome Biol. 11:R107.1-R107.19(2010).
CC -!- FUNCTION: Catalyzes the reductive methylation of 2'-deoxyuridine-5'-
CC monophosphate (dUMP) to 2'-deoxythymidine-5'-monophosphate (dTMP) while
CC utilizing 5,10-methylenetetrahydrofolate (mTHF) as the methyl donor and
CC reductant in the reaction, yielding dihydrofolate (DHF) as a by-
CC product. This enzymatic reaction provides an intracellular de novo
CC source of dTMP, an essential precursor for DNA biosynthesis.
CC {ECO:0000255|HAMAP-Rule:MF_00008}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + dUMP = 7,8-
CC dihydrofolate + dTMP; Xref=Rhea:RHEA:12104, ChEBI:CHEBI:15636,
CC ChEBI:CHEBI:57451, ChEBI:CHEBI:63528, ChEBI:CHEBI:246422;
CC EC=2.1.1.45; Evidence={ECO:0000255|HAMAP-Rule:MF_00008};
CC -!- PATHWAY: Pyrimidine metabolism; dTTP biosynthesis. {ECO:0000255|HAMAP-
CC Rule:MF_00008}.
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00008}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00008}.
CC -!- SIMILARITY: Belongs to the thymidylate synthase family. Bacterial-type
CC ThyA subfamily. {ECO:0000255|HAMAP-Rule:MF_00008}.
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DR EMBL; CP000920; ACO22050.1; -; Genomic_DNA.
DR RefSeq; WP_000158639.1; NC_012467.1.
DR AlphaFoldDB; C1CJD5; -.
DR SMR; C1CJD5; -.
DR GeneID; 66805822; -.
DR KEGG; spp:SPP_0690; -.
DR HOGENOM; CLU_021669_0_0_9; -.
DR UniPathway; UPA00575; -.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0004799; F:thymidylate synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006231; P:dTMP biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0006235; P:dTTP biosynthetic process; IEA:UniProtKB-UniPathway.
DR GO; GO:0032259; P:methylation; IEA:UniProtKB-KW.
DR CDD; cd00351; TS_Pyrimidine_HMase; 1.
DR Gene3D; 3.30.572.10; Thymidylate synthase/dCMP hydroxymethylase domain; 1.
DR HAMAP; MF_00008; Thymidy_synth_bact; 1.
DR InterPro; IPR045097; Thymidate_synth/dCMP_Mease.
DR InterPro; IPR023451; Thymidate_synth/dCMP_Mease_dom.
DR InterPro; IPR036926; Thymidate_synth/dCMP_Mease_sf.
DR InterPro; IPR000398; Thymidylate_synthase.
DR InterPro; IPR020940; Thymidylate_synthase_AS.
DR PANTHER; PTHR11548; THYMIDYLATE SYNTHASE 1; 1.
DR PANTHER; PTHR11548:SF1; THYMIDYLATE SYNTHASE-RELATED; 1.
DR Pfam; PF00303; Thymidylat_synt; 1.
DR PRINTS; PR00108; THYMDSNTHASE.
DR SUPFAM; SSF55831; Thymidylate synthase/dCMP hydroxymethylase; 1.
DR PROSITE; PS00091; THYMIDYLATE_SYNTHASE; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Methyltransferase; Nucleotide biosynthesis; Transferase.
FT CHAIN 1..279
FT /note="Thymidylate synthase"
FT /id="PRO_1000197264"
FT ACT_SITE 154
FT /note="Nucleophile"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00008"
FT BINDING 133..134
FT /ligand="dUMP"
FT /ligand_id="ChEBI:CHEBI:246422"
FT /ligand_note="ligand shared between dimeric partners"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00008"
FT BINDING 178..181
FT /ligand="dUMP"
FT /ligand_id="ChEBI:CHEBI:246422"
FT /ligand_note="ligand shared between dimeric partners"
FT /note="in other chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00008"
FT BINDING 181
FT /ligand="(6R)-5,10-methylene-5,6,7,8-tetrahydrofolate"
FT /ligand_id="ChEBI:CHEBI:15636"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00008"
FT BINDING 189
FT /ligand="dUMP"
FT /ligand_id="ChEBI:CHEBI:246422"
FT /ligand_note="ligand shared between dimeric partners"
FT /note="in other chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00008"
FT BINDING 219..221
FT /ligand="dUMP"
FT /ligand_id="ChEBI:CHEBI:246422"
FT /ligand_note="ligand shared between dimeric partners"
FT /note="in other chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00008"
FT BINDING 278
FT /ligand="(6R)-5,10-methylene-5,6,7,8-tetrahydrofolate"
FT /ligand_id="ChEBI:CHEBI:15636"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00008"
SQ SEQUENCE 279 AA; 32554 MW; 3A1FC537CA648C6A CRC64;
MTKADTIFKE NIERILKEGV FSEQARPKYK DGTVANSKYV TGAFSEYDLS KGEFPITTLR
PIAIKSAIKE VLWIYQDQSN SLEVLNDKYN VHYWNDWEVG DTGTIGERYG AVVKKHDIIN
KLLKQLETNP WNRRNIISLW DYQAFEETDG LLPCAFQTMF DVRRVDGEIY LDATLTQRSN
DMLVAHHINA MQYVALQMMI AKHFGWKVGK FFYFINNLHI YDNQFEQAQE LLRREPSNCQ
PRLVLNVPDG TNFFDIKAED FELVDYDPVK PQLKFDLAI
//
