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Abstract
Understanding the connection between local and global dynamics can provide valuable insights into enzymatic function and may contribute to the development of novel strategies for enzyme modulation. In this work, we investigated the dynamics at both the global and local (active site) levels of Shikimate Kinase (SK) through microsecond time-scale molecular dynamics (MD) simulations of the holoenzyme in the product state. Our focus was on the wild-type (WT) enzyme and two mutants (R116A and R116K) which are known for their reduced catalytic activity. Through exploring the dynamics of these variants, we gained insights into the role of residue R116 and its contribution to overall SK dynamics. We argue that the connection between local and global dynamics can be attributed to local frustration near the mutated residue which perturbs the global protein dynamics.
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