Kv1.5 is a potassium channel that is involved in restoring the resting membrane potential after depolarisation. Kv1.5 is not a classic cannabinoid receptor but its activity is modulated by cannabinoids. Since cannabinoids have a physiological effect on Kv1.5 it is effectively a cannabinoid receptor.

Chemical Name: 
Potassium voltage-gated channel, shaker-related subfamily, member 5, KCNA5
IUPHAR entry: 
Wikipedia entry: 
Distribution: 

Brain: hippocampus, cortex, pituitary, oligodendrocytes, microglia, Schwann cells. Pulmonary arterial smooth muscle, spinal cord. Skeletal muscle. Atrial myocytes, atrium, ventricle.

Endocannabinoids: 
Literature Discussion: 

Anandamide 2AG  

References:

Pertwee, R.G., Howlett, A.C., Abood, M.E., Alexander, S.P.H., Di Marzo, V., Elphick, M.R., Greasley, P.J., Hansen, H.S., Kunos, G., Mackie, K., et al. (2010). International Union of Basic and Clinical Pharmacology. LXXIX. cannabinoid receptors and their ligands: beyond CB₁ and CB₂. Pharmacol. Rev. 62, 588–631.