q_0_Ki c_Ki W_i q_0_Ko c_Ko W_o q_0_Nai c_Nai W_i q_0_Nao c_Nao W_o q_0_ATP c_ATP W_i q_0_ADP c_ADP W_i q_0_Pi c_Pi W_i q_0_H 10 pH 1000 W_i