Journal
BIOCHEMISTRY
Volume 58, Issue 48, Pages 4804-4808Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.biochem.9b00881
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Funding
- Engineering and Physical Sciences Research Council [EP/R512503/1]
- AWE
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Fentanyl is an opioid analgesic, which is routinely used in general surgery to suppress the sensation of pain and as the analgesic component in the induction and maintenance of anesthesia. Fentanyl is also used as the main component to induce anesthesia and as a potentiator to the general anesthetic propofol. The mechanism by which fentanyl induces its anesthetic action is still unclear, and we have therefore employed fully atomistic molecular dynamics simulations to probe this process by simulating the interactions of fentanyl with the Gloeobacter violaceus ligand-gated ion channel (GLIC). In this paper, we identify multiple extracellular fentanyl binding sites, which are different from the transmembrane general anesthetic binding sites observed for propofol and other general anesthetics. Our simulations identify a novel fentanyl binding site within the GLIC that results in conformational changes that inhibit conduction through the channel.
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