Glutamate-gated chloride channel subunit beta (CrGluCl-B) (CrGluCl-B)

CrGluCl-B refers to the beta subunit of the glutamate-gated chloride channel (GluCl) found in the cat flea, Ctenocephalides felis. These channels are members of the Cys-loop family of ligand-gated ion channels and are unique to invertebrates, making them highly effective targets for antiparasitic drugs. In the flea nervous system, GluCls mediate inhibitory neurotransmission by allowing chloride ions to flow into cells upon activation by L-glutamate, leading to membrane hyperpolarization. Drugs such as macrocyclic lactones (e.g., ivermectin) act as potent allosteric activators of these channels, causing persistent opening that results in flaccid paralysis and death of the parasite. Because GluCls are absent in mammals, these targets provide a high margin of safety for the host while remaining lethal to ectoparasites. Understanding the specific composition of these channels, including the CrGluCl-B subunit, is critical for addressing emerging insecticide resistance in veterinary medicine.

Other names

Glutamate-gated chloride channel beta subunitGluCl betaCtenocephalides felis glutamate-gated chloride channel subunit beta

Positive allosteric modulation leading to channel opening and hyperpolarization of neurons/muscle cells; or competitive antagonism of the chloride channel.