Ga. Gerencser, INTRACELLULAR K-CALIFORNICA GUT - EFFECT OF TRANSPORTED SOLUTES( ACTIVITIES IN APLYSIA), Comparative biochemistry and physiology. Part A, Physiology, 105(1), 1993, pp. 105-109
1. Intracellular K+ activity (a(K)i) (368 mM) is above electrochemical
equilibrium and constitutes the major portion of intracellular osmola
lity. 2. Neither glycine nor glucose had any effect on (a(K)i). 3. Oua
bain decreased (a(K)i) from control toward electrochemical equilibrium
. 4. Activity coefficient of K+ reflects a totally free K+ intracellul
ar pool for this ion.