A small molecule enhances arrestin-3 binding to the β2-adrenergic receptor
Author Information
Author(s): Kurt Han, Akyol Ali, Son Cagdas Devrim, Zheng Chen, Gado Irene, Meli Massimiliano, Ferrandi Erica Elisa, Bassanini Ivan, Vasile Francesca, Gurevich Vsevolod V., Nebol Aylin, Cagavi Esra, Morra Giulia, Sensoy Ozge
Primary Institution: Cold Spring Harbor Laboratory
Hypothesis
Pre-activated rotated states of arrestin can be stabilized by small molecules to promote binding to phosphorylation-deficient receptors.
Conclusion
The study shows that a small molecule can enhance the binding of arrestin-3 to specific receptors, which could have implications for treating various human disorders.
Supporting Evidence
- The compound destabilized the ionic lock between the finger and the back loop of arrestin-3.
- The compound enabled transition of the ‘gate loop’ towards the pre-activated state.
- The predicted binding pocket aligns with NMR data showing close contact with the compound.
- The compound increased arrestin-3 binding to phosphorylation-deficient β2-adrenergic receptor.
Takeaway
Researchers found a tiny molecule that helps a protein called arrestin-3 stick to certain receptors better, which might help with some diseases.
Methodology
Virtual screening on druggable pockets in Molecular Dynamics trajectories of arrestin-3 was performed to identify a compound that enhances binding.
Digital Object Identifier (DOI)
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