TYSY_SPHAL
ID TYSY_SPHAL Reviewed; 311 AA.
AC Q1GTH6;
DT 26-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT 03-MAR-2009, sequence version 2.
DT 03-AUG-2022, entry version 99.
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=Sala_1332;
OS Sphingopyxis alaskensis (strain DSM 13593 / LMG 18877 / RB2256)
OS (Sphingomonas alaskensis).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Sphingomonadales;
OC Sphingomonadaceae; Sphingopyxis.
OX NCBI_TaxID=317655;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 13593 / LMG 18877 / RB2256;
RX PubMed=19805210; DOI=10.1073/pnas.0903507106;
RA Lauro F.M., McDougald D., Thomas T., Williams T.J., Egan S., Rice S.,
RA DeMaere M.Z., Ting L., Ertan H., Johnson J., Ferriera S., Lapidus A.,
RA Anderson I., Kyrpides N., Munk A.C., Detter C., Han C.S., Brown M.V.,
RA Robb F.T., Kjelleberg S., Cavicchioli R.;
RT "The genomic basis of trophic strategy in marine bacteria.";
RL Proc. Natl. Acad. Sci. U.S.A. 106:15527-15533(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=(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}.
CC -!- SEQUENCE CAUTION:
CC Sequence=ABF53046.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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; CP000356; ABF53046.1; ALT_INIT; Genomic_DNA.
DR AlphaFoldDB; Q1GTH6; -.
DR SMR; Q1GTH6; -.
DR STRING; 317655.Sala_1332; -.
DR EnsemblBacteria; ABF53046; ABF53046; Sala_1332.
DR KEGG; sal:Sala_1332; -.
DR eggNOG; COG0207; Bacteria.
DR HOGENOM; CLU_021669_0_0_5; -.
DR UniPathway; UPA00575; -.
DR Proteomes; UP000006578; 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; -; 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; PTHR11548; 1.
DR Pfam; PF00303; Thymidylat_synt; 1.
DR PRINTS; PR00108; THYMDSNTHASE.
DR SUPFAM; SSF55831; SSF55831; 1.
DR TIGRFAMs; TIGR03284; thym_sym; 1.
DR PROSITE; PS00091; THYMIDYLATE_SYNTHASE; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Methyltransferase; Nucleotide biosynthesis; Reference proteome;
KW Transferase.
FT CHAIN 1..311
FT /note="Thymidylate synthase"
FT /id="PRO_0000321484"
FT ACT_SITE 192
FT /note="Nucleophile"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00008"
FT BINDING 28
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..173
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 213..216
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 216
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 224
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 254..256
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 310
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 311 AA; 35515 MW; 2CA7FE05EC3C05D0 CRC64;
MADSIHYELQ YLDLMRRIWV DGDERVDRTG VGTRSLFGET MRFSLKDDAI PLLTTKRVYW
KTALRELLWF LTGDTNIRPL VAQGVKIWTD WPLEKYRKAT GEAISATDFE ARIVADADFA
AKWGDLGPVY GHQWVNWPRY EPAGGGLFRR ADHGYNQIAA LIDSLKNNPG SRRHIFTGWN
VADLDRMALP PCHMTYQFHV RSDGGLSCLL FQRSCDLGLG FAFNIFEAAL LTRMVAEQCG
LYAHEVVWTG GDVHLYLNHA ELVEQQLARV PEGKPRLRIL RRPPSIFEYR FEDFVVEDYA
PQAHISAPVA V
