Structural highlights
Function
TRPM8_MOUSE Receptor-activated non-selective cation channel involved in detection of sensations such as coolness, by being activated by cold temperature below 25 degrees Celsius. Activated by icilin, eucalyptol, menthol, cold and modulation of intracellular pH. Involved in menthol sensation. Permeable for monovalent cations sodium, potassium, and cesium and divalent cation calcium. Temperature sensing is tightly linked to voltage-dependent gating. Activated upon depolarization, changes in temperature resulting in graded shifts of its voltage-dependent activation curves. The chemical agonists menthol functions as a gating modifier, shifting activation curves towards physiological membrane potentials. Temperature sensitivity arises from a tenfold difference in the activation energies associated with voltage-dependent opening and closing.[1] [2]
References
- ↑ Peier AM, Moqrich A, Hergarden AC, Reeve AJ, Andersson DA, Story GM, Earley TJ, Dragoni I, McIntyre P, Bevan S, Patapoutian A. A TRP channel that senses cold stimuli and menthol. Cell. 2002 Mar 8;108(5):705-15. doi: 10.1016/s0092-8674(02)00652-9. PMID:11893340 doi:https://dx.doi.org/10.1016/s0092-8674(02)00652-9
- ↑ Andersson DA, Chase HW, Bevan S. TRPM8 activation by menthol, icilin, and cold is differentially modulated by intracellular pH. J Neurosci. 2004 Jun 9;24(23):5364-9. doi: 10.1523/JNEUROSCI.0890-04.2004. PMID:15190109 doi:https://dx.doi.org/10.1523/JNEUROSCI.0890-04.2004