Biological ion exchanger resins. VII. Counter-ion activity coefficients in solutions of biological polyelectrolytes.
The single ion activity coefficients of K+ and Cl- counter-ions were determined in concentrated polyelectrolyte solutions. The polyelectrolytes investigated included DNA and several proteins. Results indicate that ion gradients of up to 40:1 do not lower the counter-ion activity coefficient below 0.5. Thus, published values of the intracellular activity coefficient of K+ are not incompatible with cellular models utilizing cytoplasmic ion exchange.
D001665:Binding Sites; D002712:Chlorides; D004247:DNA; D003956:Dialysis; D004563:Electrochemistry; D007475:Ion Exchange Resins; D008433:Mathematics; D011188:Potassium; D011485:Protein Binding; D011506:Proteins
D002712:Chlorides; D007475:Ion Exchange Resins; D011506:Proteins; D004247:DNA; D011188:Potassium