G-Protein-Coupled Modulation of Presynaptic Calcium Currents and Transmitter Release by a GABA_B Receptor

This work was supported by the “Research for the Future” Program by The Japan Society for the Promotion of Sciences. We thank M. Farrant, I. D. Forsythe, T. Manabe, and K. Kobayashi for critically reading this manuscript. We are also grateful to R. Y. Tsien and V. Lev-Ram for their technical advice on the caged compound photolysis system and to Novartis Pharma (Basel, Switzerland) for the generous gift of CGP35348.

Correspondence should be addressed to Tomoyuki Takahashi, Department of Neurophysiology, University of Tokyo Faculty of Medicine, Tokyo 113, Japan.