A V=1/2V<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12269877_0_1.gif">时,K<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12269877_0_2.gif">=[S] B
它近似地表示酶对底物的亲和力,K<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12269877_0_3.gif">越大,亲和力越小,反之,K<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12269877_0_4.gif">越小,亲和力越大 C
K<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12269877_0_5.gif">的单位为mol/L或mmol/L D
K<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12269877_0_6.gif">是酶的特性常数,与温度和pH无关 E
同一个酶对不同的底物有不同的K<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/12269877_0_7.gif">值