Serine displays a remarkable activation on K isozyme and oan also reverse the activity of type K inhibited by amino acids, but the activating effects of serine and FDP are not additive.

• 丝氨酸可显著激活K型PyK,也可逆转氨基酸对K型PyK的抑制作用,其逆转效率仍因氨基酸而异,但其激活作用与FDP不能相加。