Voltage-gated potassium channel Kv1 family (Kv1 family)

The Voltage-gated potassium channel Kv1 family, also known as the Shaker-related subfamily, comprises eight alpha-subunit members (Kv1.1-Kv1.8) that form tetrameric pores responsible for the selective transport of potassium ions across cell membranes (UniProt, 2024). These channels are fundamental to the nervous system, where they regulate the shape and frequency of action potentials, thereby controlling neuronal excitability and synaptic transmission (PubMed: 16382060). Beyond neurons, Kv1.3 is a critical regulator of membrane potential in effector memory T cells, making it a high-priority target for treating autoimmune disorders like multiple sclerosis and psoriasis (PubMed: 19144761). Mutations in genes encoding Kv1 channels lead to various channelopathies, such as episodic ataxia type 1 and certain forms of epilepsy (StatPearls, 2023). Pharmacological intervention typically involves small molecules or peptide toxins that block the channel pore to either enhance or reduce excitability depending on the clinical context. While therapeutically promising, targeting this family requires high selectivity to avoid off-target effects in the central nervous system or heart, where Kv1.5 plays a role in atrial repolarization.

Other names

Shaker-related potassium channel familyKCNA familyVoltage-gated potassium channel subfamily A

Drugs targeting the Kv1 family primarily act as pore blockers that physically obstruct the ion conduction pathway or as allosteric modulators that shift the voltage-dependence of channel gating (IUPHAR/BPS Guide to Pharmacology, 2023).