Purine riboside-5'-O-triphosphate sodium  (Synonyms: PTP tetrasodium)

Purine riboside-5'-O-triphosphate sodium, an active metabolite of Nebularine (HY-103694), acts as an inhibitor of DNA primase ATP and GTP polymerization activities, with IC₅₀ values of 35 µM and 28 µM for the human enzyme, respectively. Purine riboside-5'-O-triphosphate sodium inhibits calmodulin-dependent protein kinase II (CaMKII) with a K_i value of 590 µM^[1][2][3].

580.09

C₁₀H₁₁N₄Na₄O₁₃P₃

35892-95-6

O[C@H]1[C@@H](O)[C@@H](O[C@@H]1COP(OP(OP(O[Na])(O[Na])=O)(O[Na])=O)(O[Na])=O)N2C3=NC=NC=C3N=C2

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Kozlowska M, et al. ATP depletion, purine riboside triphosphate accumulation and rat thymocyte death induced by purine riboside. Toxicol Lett. 1999;104(3):171-181.  [Content Brief]

  [2]. Moore CL, et al. Human DNA primase uses Watson-Crick hydrogen bonds to distinguish between correct and incorrect nucleoside triphosphates. Biochemistry. 2004;43(38):12367-12374.  [Content Brief]

  [3]. Kwiatkowski AP, et al. Mapping of the adenosine 5'-triphosphate binding site of type II calmodulin-dependent protein kinase. Biochemistry. 1987;26(24):7636-7640.  [Content Brief]