Cited by 574Anesthesia and Sedative AgentsAnesthesia and Neurotoxicity ResearchNeuroscience and Neuropharmacology Research

Do general anaesthetics act by competitive binding to specific receptors?

Franks, N. P., Lieb, W. R.·1984·Nature

Abstract

Most proteins are insensitive to the presence of anaesthetics at concentrations which induce general anaesthesia, while some are inhibited by certain agents but not others. Here we show that, over a 100,000-fold range of potencies, the activity of a pure soluble protein (firefly luciferase) can be inhibited by 50% at anaesthetic concentrations which are essentially identical to those which anaesthetize animals. This identity holds for inhalational agents (such as halothane, methoxyflurane and chloroform), aliphatic and aromatic alcohols, ketones, ethers and alkanes. This finding is all the more striking in view of the fact that the inhibition is shown to be competitive in nature, with anaesthetic molecules competing with substrate (luciferin) molecules for binding to the protein. We show that the anaesthetic-binding site can accommodate only one large, but more than one small, anaesthetic molecule. The obvious mechanism suggested by our results is that general anaesthetics, despite their chemical and structural diversity, act by competing with endogenous ligands for binding to specific receptors.

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Crossref · 10.1038/310599a0

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24 of 24 references verified0 citation errors · 0 not checkable

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  • Stereoselective optical isomers of anesthetics with identical lipid solubility but lower potency challenged the non-specific lipid theory of anesthetic action.

    “together with the discovery of stereoselective optical isomers of anesthetics with identical lipid solubility but reduced potency, called into question the non-specific lipid theory of anesthetic action [32].”

    From The Biology of General Anesthesia from Paramecium to Primate (2019) · cites this paper as [32]

  • Distinct anesthetic drugs inhibit firefly luciferase over a six-order-of-magnitude range in a cell-free system.

    “Subsequent recognition that distinct anesthetic drugs could similarly inhibit the protein firefly luciferase over an identical six-order of magnitude range in a cell-free environment”

    From The Biology of General Anesthesia from Paramecium to Primate (2019) · cites this paper as [32]

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Authors
Franks, N. P., & Lieb, W. R.
Affiliations
  • Imperial College London (GB)
  • King's College London (GB)
Venue
Nature
Published
1984-08
Volume
310
Issue
5978
Pages
599-601
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2028401432
Cited by
572
References
24
Citations by year
2026: 6 · 2025: 11 · 2024: 8 · 2023: 8 · 2022: 9 · 2021: 9 · 2020: 11 · 2019: 12 · 2018: 7 · 2017: 15 · 2016: 12 · 2015: 16 · 2014: 20 · 2013: 21 · 2012: 22
FWCI
24.22
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Anesthesiology and Pain Medicine › Anesthesia and Sedative Agents
  • Life Sciences › Neuroscience › Developmental Neuroscience › Anesthesia and Neurotoxicity Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
general anesthetics, competitive binding, firefly luciferase, protein inhibition, competitive inhibition, inhalational anesthetics, halothane, methoxyflurane, chloroform
MeSH terms
Hexanols, Anesthesia, General, Anesthetics, Animals, Coleoptera, Binding Sites, Binding, Competitive, Fatty Alcohols, Halothane, Kinetics, Luciferases, Molecular Conformation, Protein Binding, Protein Conformation

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