Essential Role for TRPC5 in Amygdala Function and Fear-Related Behavior

The transient receptor potential channel 5 (TRPC5) is predominantly expressed in the brain where it can form heterotetrameric complexes with TRPC1 and TRPC4 channel subunits. These excitatory, nonselective cationic channels are regulated by G protein, phospholipase C-coupled receptors. Here, we show that TRPC5(-/-) mice exhibit diminished innate fear levels in response to innately aversive stimuli. Moreover, mutant mice exhibited significant...