Wasabi receptor toxin

UniProtKB accession:  C0HLG4

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UniProtKB description:  Cell-penetrating peptide (CPP) with defensive purpose that induces pain by specifically activating mammalian sensory neuron TRPA1 channels. It non-covalently binds to the same region than other TRPA1 agonists (irritants), but acts via a distinct biochemical mechanism. Its binding stabilizes the TRPA1 open state and diminishes calcium-permeability. Consequently, it produces pain and pain hypersensitivity, but fails to trigger efferent release of neuropeptides (CGRP) and neurogenic inflammation typically produced by noxious electrophiles. Is not active on voltage-gated potassium channels and other TRP channels.