《生物化学》课程PPT教学课件（英文版）Chapter 13 Biosignaling

AG=RTIn(CoutCin)+ZfV

table 13-2 lon Concentrations in Cells and Extracellular Fluids(mM) K Na Ca2+ c n Out In Out In Out n Out Cell type Squid axon 400 ≤0.4 40-150 560 Frog muscle 124 2.3 10.4 109 <0.1 2.1 1.5 78

E=-(RT/ T)In (Cout Cin)

CH3 O CH3N—CH2CH2O-C—CH3 CH3 Acetylcholine(ach)

Acetylcholine Inding 十 ntinued exeitation Outside Inside Resti Excited Des (gate closed) (gate open) gate closed) AC