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Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
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CNS stimulants, such as cocaine, amphetamines, and cannabinoids, have varying structures and mechanisms of action that lead to different therapeutic effects and side effects. Cocaine, with its molecular formula C17H21NO4, is a tropane alkaloid and a tertiary amino compound. It has two chemical forms: the hydrochloride salt and the "freebase." The former is in powder form, while the latter involves removing the hydrochloride salt to create a form that can be smoked. Cocaine exerts its...
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Cannabinoid Interactions with Proteins: Insights from Structural Studies.

Anna N Bukiya1, Alex M Dopico2

  • 1Department of Pharmacology, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN, USA. abukiya@uthsc.edu.

Advances in Experimental Medicine and Biology
|July 24, 2019
PubMed
Summary
This summary is machine-generated.

Structural studies reveal how cannabinoids bind to various proteins, offering insights into receptor interactions. This knowledge aids in designing more effective cannabinoid-based medicines with fewer side effects.

Keywords:
2-arachidonoylglycerolAnandamideCannabinoid receptor agonistCannabinoid receptor antagonistG protein-coupled receptorLipid-protein interactionsTetrahydrocannabinol

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Area of Science:

  • Biochemistry
  • Structural Biology
  • Medicinal Chemistry

Background:

  • Cannabinoids are increasingly used for medical and recreational purposes.
  • Legalization and medicinal chemistry advancements drive interest in cannabinoid-protein interactions.
  • Understanding these interactions is key for developing new therapeutics.

Purpose of the Study:

  • To review structural data of cannabinoid-protein complexes.
  • To elucidate the binding mechanisms of various cannabinoids (phyto-, endo-, synthetic).
  • To highlight the implications of binding site variations on protein function.

Main Methods:

  • Analysis of high-resolution cryo-electron microscopy (cryo-EM) data.
  • Examination of X-ray crystallography studies.
  • Review of structural data for cannabinoid-protein complexes.

Main Results:

  • Detailed structural insights into cannabinoid binding sites across diverse proteins (Fab, CRBP2, FABP5, PPARγ, CB1, CB2).
  • Cannabinoid binding pockets exhibit complex designs, often within conventional ligand-binding pockets.
  • Minor variations in amino acid interactions within binding sites lead to significant functional consequences.

Conclusions:

  • Structural data on cannabinoid-protein interactions are rapidly accumulating.
  • Understanding these precise interactions is crucial for rational drug design.
  • This research paves the way for developing potent, side-effect-free cannabinoid pharmacotherapies.