ID TYSY_MYCBT Reviewed; 266 AA. AC C1AFM7; DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot. DT 25-MAY-2022, sequence version 2. DT 04-NOV-2026, entry version 78. 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}; GN OrderedLocusNames=JTY_2775; OS Mycobacterium bovis (strain BCG / Tokyo 172 / ATCC 35737 / TMC 1019). OC Bacteria; Bacillati; Actinomycetota; Actinomycetes; Mycobacteriales; OC Mycobacteriaceae; Mycobacterium; Mycobacterium tuberculosis complex. OX NCBI_TaxID=561275; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=BCG / Tokyo 172 / ATCC 35737 / TMC 1019; RX PubMed=19200449; DOI=10.1016/j.vaccine.2009.01.034; RA Seki M., Honda I., Fujita I., Yano I., Yamamoto S., Koyama A.; RT "Whole genome sequence analysis of Mycobacterium bovis bacillus Calmette- RT Guerin (BCG) Tokyo 172: a comparative study of BCG vaccine substrains."; RL Vaccine 27:1710-1716(2009). 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=dUMP + (6R)-5,10-methylene-5,6,7,8-tetrahydrofolate = 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}. CC -!- SEQUENCE CAUTION: CC Sequence=BAH27056.1; Type=Erroneous initiation; Note=Truncated N-terminus.; Evidence={ECO:0000250|UniProtKB:P9WFR9}; CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AP010918; BAH27056.1; ALT_INIT; Genomic_DNA. DR RefSeq; WP_003911953.1; NC_012207.1. DR AlphaFoldDB; C1AFM7; -. DR SMR; C1AFM7; -. DR GeneID; 45426752; -. DR KEGG; mbt:JTY_2775; -. DR HOGENOM; CLU_021669_0_0_11; -. DR OMA; AAHQWVT; -. DR UniPathway; UPA00575; -. DR GO; GO:0005829; C:cytosol; IEA:TreeGrafter. 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-UniRule. DR CDD; cd00351; TS_Pyrimidine_HMase; 1. DR FunFam; 3.30.572.10:FF:000001; Thymidylate synthase; 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 NCBIfam; NF002497; PRK01827.1-3; 1. DR NCBIfam; NF002499; thyA; 1. DR NCBIfam; TIGR03284; thym_sym; 2. DR PANTHER; PTHR11548:SF9; THYMIDYLATE SYNTHASE; 1. DR PANTHER; PTHR11548; THYMIDYLATE SYNTHASE 1; 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..266 FT /note="Thymidylate synthase" FT /id="PRO_1000197254" FT ACT_SITE 149 FT /note="Nucleophile" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00008" FT BINDING 24 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 54 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 129..130 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 169..172 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 172 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 180 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 210..212 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 265 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 266 AA; 30152 MW; 5D6DA596F096B88B CRC64; MSIVTPYEDL LRFVLETGTP KSDRTGTGTR SLFGQQMRYD LSAGFPLLTT KKVHFKSVAY ELLWFLRGDS NIGWLHEHGV TIWDEWASDT GELGPIYGVQ WRSWPAPSGE HIDQISAALD LLRTDPDSRR IIVSAWNVGE IERMALPPCH AFFQFYVADG RLSCQLYQRS ADLFLGVPFN IASYALLTHM MAAQAGLSVG EFIWTGGDCH IYDNHVEQVR LQLSREPRPY PKLLLADRDS IFEYTYEDIV VKNYDPHPAI KAPVAV //