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. 1985 Mar 25;13(6):2035–2043. doi: 10.1093/nar/13.6.2035

Nucleotide sequence of a functional cDNA for human thymidylate synthase.

K Takeishi, S Kaneda, D Ayusawa, K Shimizu, O Gotoh, T Seno
PMCID: PMC341133  PMID: 2987839

Abstract

We have determined the nucleotide sequence of a cDNA clone, pcHTS-1, encoding human thymidylate synthase (5,10-methylenetetrahydrofolate: dUMP C-methyltransferase, EC 2.1.1.45) which was previously isolated from a human fibroblast expressible cDNA library and functional in mouse cells. The 1.6 kilobase cDNA insert of pcHTS-1 encodes a subunit protein of 313 amino acid (Mr = 35,706) and its predicted amino acid sequence is highly conserved in many regions including folylpolyglutamate and 5-fluoro-2'-deoxyuridylate binding sites, when compared with those of Lactobacillus casei, Escherichia coli, and bacteriophage T4. The cDNA contains in its 5'-untranslated region a triple tandemly repeated sequence consisting of 90 nucleotides, which starts immediately upstream of the ATG initiator codon, is very high in G+C content (80%), and can form three possible interconvertible stem-loop structures.

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Selected References

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