ID   TYSY_MYCS5              Reviewed;         289 AA.
AC   Q4A611;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   13-SEP-2005, sequence version 1.
DT   27-MAR-2024, entry version 104.
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=MS53_0398;
OS   Mycoplasmopsis synoviae (strain 53) (Mycoplasma synoviae).
OC   Bacteria; Mycoplasmatota; Mycoplasmoidales; Metamycoplasmataceae;
OC   Mycoplasmopsis.
OX   NCBI_TaxID=262723;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=53;
RX   PubMed=16077101; DOI=10.1128/jb.187.16.5568-5577.2005;
RA   Vasconcelos A.T.R., Ferreira H.B., Bizarro C.V., Bonatto S.L.,
RA   Carvalho M.O., Pinto P.M., Almeida D.F., Almeida L.G.P., Almeida R.,
RA   Alves-Junior L., Assuncao E.N., Azevedo V.A.C., Bogo M.R., Brigido M.M.,
RA   Brocchi M., Burity H.A., Camargo A.A., Camargo S.S., Carepo M.S.,
RA   Carraro D.M., de Mattos Cascardo J.C., Castro L.A., Cavalcanti G.,
RA   Chemale G., Collevatti R.G., Cunha C.W., Dallagiovanna B., Dambros B.P.,
RA   Dellagostin O.A., Falcao C., Fantinatti-Garboggini F., Felipe M.S.S.,
RA   Fiorentin L., Franco G.R., Freitas N.S.A., Frias D., Grangeiro T.B.,
RA   Grisard E.C., Guimaraes C.T., Hungria M., Jardim S.N., Krieger M.A.,
RA   Laurino J.P., Lima L.F.A., Lopes M.I., Loreto E.L.S., Madeira H.M.F.,
RA   Manfio G.P., Maranhao A.Q., Martinkovics C.T., Medeiros S.R.B.,
RA   Moreira M.A.M., Neiva M., Ramalho-Neto C.E., Nicolas M.F., Oliveira S.C.,
RA   Paixao R.F.C., Pedrosa F.O., Pena S.D.J., Pereira M., Pereira-Ferrari L.,
RA   Piffer I., Pinto L.S., Potrich D.P., Salim A.C.M., Santos F.R., Schmitt R.,
RA   Schneider M.P.C., Schrank A., Schrank I.S., Schuck A.F., Seuanez H.N.,
RA   Silva D.W., Silva R., Silva S.C., Soares C.M.A., Souza K.R.L., Souza R.C.,
RA   Staats C.C., Steffens M.B.R., Teixeira S.M.R., Urmenyi T.P.,
RA   Vainstein M.H., Zuccherato L.W., Simpson A.J.G., Zaha A.;
RT   "Swine and poultry pathogens: the complete genome sequences of two strains
RT   of Mycoplasma hyopneumoniae and a strain of Mycoplasma synoviae.";
RL   J. Bacteriol. 187:5568-5577(2005).
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; AE017245; AAZ43810.1; -; Genomic_DNA.
DR   RefSeq; WP_011283541.1; NC_007294.1.
DR   AlphaFoldDB; Q4A611; -.
DR   SMR; Q4A611; -.
DR   STRING; 262723.MS53_0398; -.
DR   KEGG; msy:MS53_0398; -.
DR   eggNOG; COG0207; Bacteria.
DR   HOGENOM; CLU_021669_0_2_14; -.
DR   OrthoDB; 9774633at2; -.
DR   UniPathway; UPA00575; -.
DR   Proteomes; UP000000549; Chromosome.
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   NCBIfam; TIGR03284; thym_sym; 1.
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; Reference proteome;
KW   Transferase.
FT   CHAIN           1..289
FT                   /note="Thymidylate synthase"
FT                   /id="PRO_1000000630"
FT   ACT_SITE        170
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00008"
FT   BINDING         21
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         150..151
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         191..194
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         194
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         202
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         232..234
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         288
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   289 AA;  33586 MW;  3807973F74188F33 CRC64;
     MKQYLHLLEH IKTSGTFKKD RTNIGTISLF GLQARYNLKE GFPLLTTKKM AWKAICHELL
     WFLKGDTNIK YLVDNNVNIW NEWPYEIFKK SNDYQGESLK EFSQKIKEDS SFAQKYGELG
     PVYGKQWRDF FGVDQISQVI NDIKNNPTSR RLIVSAWNVA QIDKMALPPC HAFFQFYVND
     NNELSLHLYQ RSGDMFLGVP FNIASYSLLL SMVAQVTNLK VGEFIHTIGD AHIYSNHIDQ
     VNTQLERAPY KLPKLILNKN IKNIFDFTFE DIELENYISH ETIKAKVAV
//