Kinetics of potassium transport across trout gills.
1. Kinetics of potassium transport across trout gills was studied, using an isolated-head preparation. 2. Potassium exchanges were shown to take place across secondary lamellae only. 3. Influx of potassium was saturable and fitted satisfactorily the lineweaver-Burk linear plot. 4. Results suggest that these exchanges occur through potassium channel. 5. Kinetics of potassium exchanges is discussed in relation to the maintenance of the osmoregulation in fish.
Laboratoire de Physiologie Cellulaire et Comparée URA CNRS 651, Faculté des Sciences, Nice, France.
E
E
Gardaire
J
J
Isaia
M
M
Bornancin
D000818:Animals; D001692:Biological Transport; D005880:Gills / Q000378:metabolism*; D007700:Kinetics; D011188:Potassium / Q000378:metabolism*; D015221:Potassium Channels / Q000378:metabolism; D014337:Trout / Q000378:metabolism*; D014882:Water-Electrolyte Balance
D015221:Potassium Channels; D011188:Potassium