TYSY2_BACSH
ID TYSY2_BACSH Reviewed; 264 AA.
AC E0U0H8;
DT 11-JAN-2011, integrated into UniProtKB/Swiss-Prot.
DT 02-NOV-2010, sequence version 1.
DT 03-AUG-2022, entry version 58.
DE RecName: Full=Thymidylate synthase 2 {ECO:0000255|HAMAP-Rule:MF_00008};
DE Short=TS 2 {ECO:0000255|HAMAP-Rule:MF_00008};
DE Short=TSase 2 {ECO:0000255|HAMAP-Rule:MF_00008};
DE EC=2.1.1.45 {ECO:0000255|HAMAP-Rule:MF_00008};
GN Name=thyA2 {ECO:0000255|HAMAP-Rule:MF_00008}; Synonyms=thyB;
GN OrderedLocusNames=BSUW23_10675;
OS Bacillus spizizenii (strain ATCC 23059 / NRRL B-14472 / W23) (Bacillus
OS subtilis subsp. spizizenii).
OC Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus.
OX NCBI_TaxID=655816;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 23059 / NRRL B-14472 / W23;
RX PubMed=21527469; DOI=10.1099/mic.0.048520-0;
RA Zeigler D.R.;
RT "The genome sequence of Bacillus subtilis subsp. spizizenii W23: insights
RT into speciation within the B. subtilis complex and into the history of B.
RT subtilis genetics.";
RL Microbiology 157:2033-2041(2011).
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; CP002183; ADM38175.1; -; Genomic_DNA.
DR RefSeq; WP_003218224.1; NC_014479.1.
DR AlphaFoldDB; E0U0H8; -.
DR SMR; E0U0H8; -.
DR EnsemblBacteria; ADM38175; ADM38175; BSUW23_10675.
DR GeneID; 64303956; -.
DR KEGG; bss:BSUW23_10675; -.
DR HOGENOM; CLU_021669_0_0_9; -.
DR OMA; KQYLDLC; -.
DR UniPathway; UPA00575; -.
DR Proteomes; UP000002233; 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; 2.
DR PROSITE; PS00091; THYMIDYLATE_SYNTHASE; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Methyltransferase; Nucleotide biosynthesis; Transferase.
FT CHAIN 1..264
FT /note="Thymidylate synthase 2"
FT /id="PRO_0000403665"
FT ACT_SITE 146
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 51
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 126..127
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 166..169
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 169
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 177
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 207..209
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 263
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 264 AA; 30504 MW; D121522377066038 CRC64;
MKQYKDLCRH VLEHGEKKGD RTGTGTISTF GYQMRFHLQE GFPMLTTKKL HFKSIAHELL
WFLKGDTNVR YLQENGVRIW NEWADENGEL GPVYGSQWRS WRGADGETID QISRLIEDIK
TNPNSRRLIV SAWNVGEIDK MALPPCHCLF QFYVSDGKLS CQLYQRSADV FLGVPFNIAS
YALLTMMIAH VTGLEPGEFI HTFGDVHIYQ NHIEQVNLQL TRDVRPLPKL RFAREIDSIF
NFAFEDFIIE DYDPHPHIKG AVSV
