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Published on: September 6, 2024
LSD1/CoREST reversible opening-closing dynamics: discovery of a nanoscale clamp for chromatin and protein binding
Riccardo Baron1, Nadeem A Vellore
1Department of Medicinal Chemistry, College of Pharmacy, The Henry Eyring Center for Theoretical Chemistry, The University of Utah, Salt Lake City, Utah 84112, United States. r.baron@utah.edu
Abstract:
LSD1 associated with its corepressor protein CoREST is an exceptionally relevant target for epigenetic drugs. Hypotheses for the role of LSD1/CoREST as a multidocking site for chromatin and protein binding would require significant molecular flexibility, and LSD1/CoREST large-amplitude conformational dynamics is currently unknown. Here, molecular dynamics simulation reveals that the LSD1/CoREST complex in solution functions as a reversible nanoscale binding clamp. We show that the H3 histone tail binding pocket is a potential allosteric site for regulation of the rotation of SWIRM/SANT2 domains around the Tower domain. Thus, targeting this site and including receptor flexibility are crucial strategies for future drug discovery.
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