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T6632 Sigma-Aldrich

Thymidine Phosphorylase, recombinant from Escherichia coli

recombinant, expressed in E. coli, buffered aqueous solution, ≥900 units/mL, aseptically filled

Synonym: Thymidine:orthophosphate deoxy-D-ribosyltransferase



Related Categories 2.4.x.x Glycosyltransferases, 2.x.x.x Transferases, Biochemicals and Reagents, Cell Biology, Enzyme Class Index,
Quality Level   300
recombinant   expressed in E. coli
sterility   aseptically filled
form   buffered aqueous solution
concentration   ≥900 units/mL
storage temp.   2-8°C
Gene Information   Escherichia coli K12 ... deoA(948901)


General description

Thymidine phosphorylase inhibits vascular smooth muscle cell proliferation.


Thymidine phosphorylase has been used in a study to evaluate biomarkers for advanced breast cancer patients treated with capecitabine-based first-line chemotherapy. Thymidine phosphorylase has also been used in a study to investigate implications for the clinical efficacy of nucleoside analogues.

Biochem/physiol Actions

An enzyme that catalyzes the reversible conversion of thymidine to thymine. Thymidine phosphorylase is part of the pyrimidine nucleoside salvage pathway. This pathway allows pyrimidine bases to be recycled for nucleotide biosynthesis, while the pentose 1-phosphates are converted to intermediates of the pentose phosphate shunt and glycolysis. The E. coli thymidine phosphorylase shares 40% sequence homology with the human sequence, which has been found to be identical to the angiogenic agent platelet-derived endothelial growth factor. The purified E. coli enzyme has been shown to stimulate blood vessel growth in chick chorioallantoic membrane assays.

Unit Definition

One unit will convert 1.0 μmole each of thymidine and phosphate to thymine and 2-deoxyribose 1-phosphate per min at pH 7.4 at 25°C.

Physical form

Solution in 0.5 M potassium phosphate containing 2 mM uracil, 0.02% sodium azide and bovine serum albumin

Preparation Note

Cloned from E. coli and produced in overexpressing E. coli

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

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Application Index | Enzyme Index | Substrate Index | Inhibitor Index | Cofactor Index | Lectin Index
Keywords: Cell signaling, Diagnostic, Drug discovery, Metabolomics, Molecular biology

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