Potassium channels in chick lens epithelium change with maturation.
Before hatching, chick embryos show a high incidence of inwardly rectifying potassium channels and calcium-activated potassium channels in the apical membrane of their lens epithelium. Subsequent to hatching, these channel types disappear while, at about the same time, a new calcium insensitive maxi potassium channel appears. This new channel shows several properties in common with the calcium-activated maxi potassium channels but is different in its conductive and gating properties.
Rae
J L
JL
Department of Physiology, Mayo Foundation, Rochester, MN 55905.
Cooper
K E
KE
D000703:Analog-Digital Conversion; D000818:Animals; D002118:Calcium / Q000502:physiology; D002463:Cell Membrane Permeability; D002642:Chick Embryo; D002645:Chickens; D004848:Epithelium / Q000196:embryology / Q000254:growth & development / Q000378:metabolism; D007908:Lens, Crystalline / Q000196:embryology / Q000254:growth & development / Q000378:metabolism*; D008564:Membrane Potentials; D015221:Potassium Channels / Q000378:metabolism*
D015221:Potassium Channels; D002118:Calcium