Download MendeleyCompetitive inhibition of TRPV1-calmodulin interaction by vanilloids.
Hetenyi, A., Nemeth, L., Weber, E., Szakonyi, G., Winter, Z., Josvay, K., Bartus, E., Olah, Z., Martinek, T.A.(2016) FEBS Lett 590: 2768-2775
- PubMed: 27339229
- DOI: https://doi.org/10.1002/1873-3468.12267
- Primary Citation of Related Structures:
2N27 - PubMed Abstract:
There is enormous interest toward vanilloid agonists of the pain receptor TRPV1 in analgesic therapy, but the mechanisms of their sensory neuron-blocking effects at high or repeated doses are still a matter of debate. Our results have demonstrated that capsaicin and resiniferatoxin form nanomolar complexes with calmodulin, and competitively inhibit TRPV1-calmodulin interaction. These interactions involve the protein recognition interface of calmodulin, which is responsible for all of the cell-regulatory calmodulin-protein interactions. These results draw attention to a previously unknown vanilloid target, which may contribute to the explanation of the paradoxical pain-modulating behavior of these important pharmacons.
Organizational Affiliation:
Department of Medical Chemistry, University of Szeged, Hungary.
