Transport energetics of the Na+ pump in Aplysia californica gut.
Basolateral membranes of Aplysia californica foregut epithelia contain an ATP-dependent Na+ transporter (Na+ pump). Increased activity of the Na+ pump, coupled to luminal Na+/AIB symporter activity and basolateral membrane depolarization, changed the Na+ transport energetics across the basolateral membrane to a greater extent than the change in Na+ transport energetics across the luminal membrane.
Gerencser
G A
GA
Department of Physiology, College of Medicine, University of Florida, Gainesville 32610, USA.
Loo
S Y
SY
D000621:Aminoisobutyric Acids / Q000494:pharmacology*; D000818:Animals; D001048:Aplysia / Q000502:physiology*; D001693:Biological Transport, Active / Q000187:drug effects; D002462:Cell Membrane / Q000187:drug effects / Q000378:metabolism; D004068:Digestive System Physiological Phenomena; D007413:Intestinal Mucosa / Q000187:drug effects / Q000378:metabolism; D008564:Membrane Potentials / Q000187:drug effects; D012964:Sodium / Q000378:metabolism; D000254:Sodium-Potassium-Exchanging ATPase / Q000378:metabolism*
D000621:Aminoisobutyric Acids; D012964:Sodium; D000254:Sodium-Potassium-Exchanging ATPase