1TPT:
reference: Three-dimensional structure of thymidine phosphorylase from Escherichia coli at 2.8 A resolution., Walter MR, Cook WJ, Cole LB, Short SA, Koszalka GW, Krenitsky TA, Ealick SE, J Biol Chem 1990 Aug 15;265(23):14016-22. PMID: 2199449

This OCA Structure page
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