TYSY_HALVO
ID TYSY_HALVO Reviewed; 342 AA.
AC Q9UWQ5;
DT 14-MAY-2014, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-2000, sequence version 1.
DT 03-AUG-2022, entry version 87.
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}; Synonyms=hts;
OS Haloferax volcanii (Halobacterium volcanii).
OC Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Haloferacales;
OC Haloferacaceae; Haloferax.
OX NCBI_TaxID=2246;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA], FUNCTION, AND DISRUPTION PHENOTYPE.
RC STRAIN=WR341;
RX PubMed=10760149; DOI=10.1046/j.1365-2958.2000.01815.x;
RA Ortenberg R., Rozenblatt-Rosen O., Mevarech M.;
RT "The extremely halophilic archaeon Haloferax volcanii has two very
RT different dihydrofolate reductases.";
RL Mol. Microbiol. 35:1493-1505(2000).
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, ECO:0000269|PubMed:10760149}.
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 -!- DISRUPTION PHENOTYPE: Thymidine auxotrophy.
CC {ECO:0000269|PubMed:10760149}.
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; AF124982; AAF23264.1; -; Genomic_DNA.
DR AlphaFoldDB; Q9UWQ5; -.
DR SMR; Q9UWQ5; -.
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; -; 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 PANTHER; PTHR11548; PTHR11548; 1.
DR Pfam; PF00303; Thymidylat_synt; 1.
DR PRINTS; PR00108; THYMDSNTHASE.
DR SUPFAM; SSF55831; SSF55831; 1.
DR TIGRFAMs; TIGR03284; thym_sym; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Methyltransferase; Nucleotide biosynthesis; Transferase.
FT CHAIN 1..342
FT /note="Thymidylate synthase"
FT /id="PRO_0000428868"
FT ACT_SITE 176
FT /note="Nucleophile"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00008"
FT BINDING 31
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 156..157
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 196..199
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 199
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 207
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 237..239
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 341
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 342 AA; 38449 MW; 3D407170E32CD119 CRC64;
MTTTPNQGTS HAPIFDLVTD VFGTGRHKPN RTGVDTISGF SKHYTVDLQE GFPLLTTKDL
SGFRWNSLIH ELLWYFSGEE HIRTLREETG IWDAWADEEG HLDTAYGRFW RRYPVPEEGL
AGEAWPDDGH RWMNDEGTFD QLAYVLDTLD ENPNSRRLVI NAWHPANAAV STLPPCHYTF
VFNVQGDELN LHLTQRSGDI ALGVPFNLAA YAILAQVVAQ RAGFELGSFA HTIVDAHVYC
GAGERGAWYG DHLDELQSRL ADVQSPDEYL DVREWLLDAA PEEADGEEDY DHVPGLLLQA
SREPRERPAL DVADVPLEDL SFEDIVLRDY DPADGIRFAV AE
