Properties of a magnesium- or calcium-dependent adenosine triphosphatase from frog rod photoreceptor outer segment disks and its inhibition by illumination.

Adenosine Triphosphatases/antagonists & inhibitors,radiation effects Animals Anura Buffers Calcium/pharmacology Enzyme Activation Kinetics Magnesium/pharmacology Microscopy, Electron Ouabain/pharmacology Photoreceptor Cells/cytology,drug effects,enzymology,radiation effects Radiation Effects Rana pipiens Ribonucleotides Structure-Activity Relationship Temperature

Buffers Ribonucleotides Ouabain Adenosine Triphosphatases Magnesium Calcium