7.8: ATP水解
三磷酸腺苷(ATP)的键可以通过加水破坏,在一个称为水解的放能过程中释放一个或两个磷酸基。这个反应释放了化学键中的能量,供细胞使用,例如,从氨基酸中合成蛋白质。
如果除去一个磷酸基团,则ADP分子和无机磷酸盐分子会残留下来。通过去除第二个磷酸基团,ADP可以进一步水解为一磷酸腺苷。
ATP的结构
ATP由一个腺嘌呤基、一个核糖糖和三个磷酸基组成,后者通过高能磷酸酐键相互连接。
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三磷酸腺苷分子,ATP
将能量储存在细胞中备用
它由一个腺嘌呤,一个核糖
和三个磷酸基组成
后者一个连着一个
通过高能量的磷酸酐键连接
这些连接可以被水分子打破
从而释放出一个或两个磷酸基
这个放能的过程叫做水解
这种反应在细胞中
释放出连接中储存的能量
例如,两个由氨基酸合成的蛋白质
如果一个磷酸盐组被移除
一个ADP分子,腺苷二磷酸,还在
还有一个无机磷酸盐
ADP可以进一步水解为AMP
腺苷一磷酸,通过去掉
第二个磷酸基
三磷酸腺苷(ATP)的键可以通过加水破坏,在一个称为水解的放能过程中释放一个或两个磷酸基。这个反应释放了化学键中的能量,供细胞使用,例如,从氨基酸中合成蛋白质。
如果除去一个磷酸基团,则ADP分子和无机磷酸盐分子会残留下来。通过去除第二个磷酸基团,ADP可以进一步水解为一磷酸腺苷。
ATP由一个腺嘌呤基、一个核糖糖和三个磷酸基组成,后者通过高能磷酸酐键相互连接。
Takeda, Taka-aki, Shiho Miyazaki, Miki Kobayashi, Katsutoshi Nishino, Tomoko Goto, Mayu Matsunaga, Minami Ooi, et al. “Zinc Deficiency Causes Delayed ATP Clearance and Adenosine Generation in Rats and Cell Culture Models.” Communications Biology 1, no. 1 (August 22, 2018): 113. [Source]
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