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GTP (#gamma#S)and GDP (#beta#S) as electron donors: new wine in old bottles

机译:GTP(#gamma#S)和GDP(#beta#S)作为电子捐助者:旧瓶装新酒

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摘要

G proteins are membrane-bound regulatory proteins which modulate the activity of ion channels and other effector systems. The GTP and GDP analogs GTP (#gamma#S) and GDP (#beta#S) have been used to study the role of G proteins in numerous physiologic systems. The prolonged effects of these analogs have been thought to be due to the face that they are nonhydrolyzable. However, in this paper we show that the GTP (#gamma#S) and GDP (#beta#S) analogs are potent reducing agents at physiologic pH. This observation suggests that previous data obtained using these compounds may need to be reinterpreted.
机译:G蛋白是与膜结合的调节蛋白,可调节离子通道和其他效应器系统的活性。 GTP和GDP类似物GTP(#gamma#S)和GDP(#beta#S)已用于研究G蛋白在众多生理系统中的作用。这些类似物的延长作用被认为是由于它们不可水解而引起的。但是,在本文中,我们证明了GTP(#gamma#S)和GDP(#beta#S)类似物在生理pH下是有效的还原剂。该观察结果表明,使用这些化合物获得的先前数据可能需要重新解释。

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