Acid phosphatase in the contents of the oesophagus and stomach of the snail,Helix pomatia L. |
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| Institution: | 1. State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China;2. Collaborative Innovation Center of Marine Science and Technology, Hainan University, Haikou, 570228, PR China;3. Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, 570228, PR China |
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| Abstract: | - 1.1. In the contents of the oesophagus and stomach, one form of acid phosphatase is found. Its electrophoretic mobility is identical to that of the multiple form 3 of acid phosphatase from the hepatopancreas.
- 2.2. The enzyme is not stimulated by divalent cations. It is inhibited by molybdate, Cu2+, Hg2+. F− and tartrate L+.
- 3.3. The optimum pH of the enzyme is 4.5. The Km for paranitrophenylphosphate as substrate amounts to 0.25 mM. The enzyme is stable at a temperature of up to 55°C.
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