Application

在多种马铃薯普通栽培种中至少发现了两种同工酶：一种具有高 ATP 酶/ADP 酶比率（约 10），另一种该比率较低（约 1）。
反应：ATP → ADP+P_i → AMP+2P_i。

Apyrase is used to hydrolyze nucleoside triphosphates and diphosphates. Apyrase, from Sigma, has been used in inhibition studies of platelet-aggregation . Product A2230 is a high activity apyrase.

包装

100 units in glass bottle

按 ATP 酶单位销售。

Preparation Note

来源于红皮土豆

Unit Definition

One unit will liberate 1.0 μmole of inorganic phosphate from ATP or ADP per min at pH 6.5 at 30 °C.

Physical form

Lyophilized powder containing potassium succinate buffer salts.

Biochem/physiol Actions

Apyrase is found in all eukaryotes and some prokaryotes. Apyrase, from potato, has a crucial role in regulating growth and development. Apyrase is involved in the inactivation of synaptic ATP as a neurotransmitter following nerve stimulation and in the inhibition of ADP induced platelet aggregation to prevent thrombosis . Divalent metal ions are required for activity and best activity is observed with calcium ion at 5 mM.