【单选题】某信号传递分子为α、βγ三聚体,α亚基为活性亚基,当α亚基与GTP结合时可被激活,并具有潜在GTP酶活性。对该蛋白的描述最可能是
【单选题】I would rather history than geography because I can learn a lot from many historical figures.
【判断题】情商高的人会考虑各种可能性,他们善于在绝望中找到希望,重新燃起斗志。
【单选题】I would rather buy a house in the countryside than in the city.
【单选题】肽类激素促使cAMP生成的机制是
D.
激素-受体复合物使G蛋白结合GTP而活化,后者再激活腺苷酸环化酶