The ecto-ATPase from chicken gizzard (smooth muscle) was solubilized, and the 66-kDa cell membrane ecto-ATPase protein was purified. The protein was then subjected to both enzymatic and chemical cleavage, and the resultant peptides were purified by reverse phase high pressure liquid chromatography
A soluble ATP-diphosphohydrolase (apyrase, EC 3.6.1.5) has been purified from potato tubers. Solanum tuberosum, to a specific activity of 10,000 mumol P(i)/mg/min. The cDNA corresponding to the potato apyrase has been isolated and termed RROP1. The deduced amino acid sequence contains a putative
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