Buccalin

Description

Buccalin is a neuropeptide that colocalizes with small molecule cardioactive peptides in neuronal B15. When exogenously applied to the ARC neuromuscular junction, Buccalin reduces the amplitude of muscle contraction induced by motor neuron firing and acts only presynaptically. Buccalin has no effect on the rate of muscle relaxation and reduces motor neuron-induced ARC excitatory junction potentials without affecting contraction produced by direct acetylcholine action on the muscle.