
IndraLab
Statements
sparser
"Receptor activation subjects presynaptic N- and P/Q-type calcium channels to a rapid, membrane-delimited inhibition-mediated by direct, voltage-dependent interactions between G protein betagamma subunits and the channels-and to a slower, voltage-independent modulation involving soluble second messenger molecules."
sparser
"The inhibition of Ca 2+ currents through P2Y12 receptors included a slowing of activation kinetics that is characteristic of the voltage-dependent interaction between G protein βγ subunits and channel proteins and was attenuated by pertussis toxin, but not by a phospholipase C inhibitor."