pertussis toxin 中文意思是什麼
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It was found that plc activity was stimulated by both exogenous purified calmodulin and heterotrimeric g protein agonist cholera toxin. while, the stimulated effect on plc activity caused by exogenous calmodulin was inhibited by heterotrimeric g protein antagonist pertussis toxin, and plc antagonist u - 73122 inhibited the effect caused by cholera toxin. we also measure the free ca ~ ( 2 + ) level in germinating pollen grains, and found that exogenous purified calmodulin was able to increase the free ca ~ ( 2 + ) level, and their effects on ca ~ ( 2 + ) level were inhibited by u - 73122
實驗中，利用[ ~ 3h ] pip _ 2和花粉原生質體共同孵育的體系，檢測出了百合花粉細胞具有依賴pip _ 2的plc活性；利用該體系還檢測出外源鈣調素可促進plc的活性，其中10 ~ （ - 9 ） m的鈣調素可使plc的活性提高三倍；異三聚體g蛋白的激活劑ctx可以激活plc的活性，而其抑制劑ptx可明顯抑制plc活性；外源鈣調素的這種作用可以被ptx抑制；而plc抑制劑u - 73122抑制ctx對plc的激活效應。
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