Voltage-gated sodium channel and L-type calcium channel (NaV (sodium channel), CaV1 (L-type calcium channel))

Voltage-gated sodium channels (NaV) and L-type calcium channels (CaV1, a subfamily of voltage-gated calcium channels) are evolutionarily related, multi-subunit transmembrane proteins that enable rapid changes in membrane potential in excitable cells[2][3][4]. NaV channels are critical for the initiation and rapid propagation of action potentials in nerve and muscle, while L-type calcium channels (CaV1) couple depolarization to a range of intracellular events such as muscle contraction, secretion, and synaptic transmission[2][4][5]. These channels share a similar four-domain structure, each domain comprising six transmembrane helices, with a pore-forming alpha subunit hosting the voltage sensor and selectivity filter[1][4][5]. Dysfunction or pharmacological modulation of these channels is implicated in multiple diseases, and both represent major drug targets for neurological, cardiovascular, and pain disorders[2][3][4]. Combining both as a single "target" is not standard, as each channel type is encoded by separate genes, has different physiological roles, and is targeted by different drug classes. If you require information separately for the sodium channel or L-type calcium channel, those structured records should be generated per channel type for accuracy.

Other names

Voltage-gated sodium channel (NaV)Voltage-gated calcium channel (CaV)L-type calcium channel (CaV1 subfamily)Sodium channelCalcium channelL-type VGCC

Blockade of voltage-gated sodium channels reduces neuronal excitability and prevents action potential initiation (anti-seizure, local anesthetic, antiarrhythmic effects)[2][3]. Blockade of L-type calcium channels reduces calcium influx, leading to decreased cardiac contractility and vascular smooth muscle contraction (anti-hypertensive, antianginal, and antiarrhythmic effects)[3][4][5].