[Blocking of the latrotoxin channel by cadmium ions]

Influence of cadmium ions on current-voltage characteristics of latrotoxin treated BLM was studied. It was established that the affinity of cadmium ions to cis-mouth of a channel is substantially more than to trans-mouth for all the studied voltages. It was shown than the blocking of latrotoxin channels can occur by screening of the electric potential at the entrance of the pore.