| Name | Length | Bottleneck | Hydropathy | Charge | Polarity | Mutability |
|---|
| Ion channel |
| Name | Description |
|---|
| There are no data to be displayed... | |
| Gene | Trpv1 | |
| PDB ID | 2PNN | |
| Protein Name | ||
| Crystal Structure of the Ankyrin Repeat Domain of Trpv1 | ||
| Organism | ||
| Rattus norvegicus | ||
| Receptor Name | Transient receptor potential cation channel subfamily V member 1 | |
| UniProt ID | O35433 | |
| Function | ||
| Ligand-activated non-selective calcium permeant cation channel involved in detection of noxious chemical and thermal stimuli. Seems to mediate proton influx and may be involved in intracellular acidosis in nociceptive neurons. Involved in mediation of inflammatory pain and hyperalgesia. Sensitized by a phosphatidylinositol second messenger system activated by receptor tyrosine kinases, which involves PKC isozymes and PCL. Activation by vanilloids, like capsaicin, and temperatures higher than 42 degrees Celsius, exhibits a time- and Ca2+-dependent outward rectification, followed by a long-lasting refractory state. Mild extracellular acidic pH (6.5) potentiates channel activation by noxious heat and vanilloids, whereas acidic conditions (pH <6) directly activate the channel. Can be activated by endogenous compounds, including 12-hydroperoxytetraenoic acid and bradykinin. Acts as ionotropic endocannabinoid receptor with central neuromodulatory effects. Triggers a form of long-term depression (TRPV1-LTD) mediated by the endocannabinoid anandamine in the hippocampus and nucleus accumbens by affecting AMPA receptors endocytosis. | ||
| Activity regulation | ||
| Channel activity is activated via the interaction with PIRT and phosphatidylinositol 4,5-bisphosphate (PIP2). Both PIRT and PIP2 are required to activate channel activity (By similarity). The channel is sensitized by ATP binding. Repeated stimulation with capsaicin gives rise to progressively smaller responses, due to desensitization. This desensitization is triggered by the influx of calcium ions and is inhibited by elevated ATP levels. Ca2+ and CALM displace ATP from its binding site and trigger a conformation change that leads to a closed, desensitized channel. Intracellular PIP2 inhibits desensitization. The double-knot toxin (DkTx) from the Chinese earth tiger tarantula activates the channel and traps it in an open conformation. The Scolopendra mutilans RhTx toxin potentiates the heat activation pathway mediated by this channel by binding to the charge-rich outer pore region (in an activated state) (By similarity). | ||
| PID | Structure | Name | Source pungent TCM | FEMA or pubchemCID | Reference | ||
|---|---|---|---|---|---|---|---|
| No Result | |||||||