Transapical Na+ electrochemical potential difference and solute accumulation in Aplysia californica enterocytes.
Extracellular water averaged 20% of total intestinal water. The sugar, D-galactose, was accumulated by the Aplysia enterocytes. The amino acids glycine, L-alanine and alpha-aminoisobutyric acid (AIB) were all accumulated by the Aplysia enterocytes. The electrochemical potential difference for Na+ across the mucosal membrane of Aplysia enterocytes was energetically adequate in driving D-galactose, L-alanine, glycine or AIB uphill into the Aplysia enterocytes.
D000818:Animals; D001048:Aplysia; D004563:Electrochemistry; D007413:Intestinal Mucosa / Q000378:metabolism; D007422:Intestines / Q000166:cytology / Q000502:physiology*; D011188:Potassium / Q000502:physiology; D012964:Sodium / Q000502:physiology*
D012964:Sodium; D011188:Potassium