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- W2952809892 abstract "The mean time for a diffusing ligand to activate a target protein located on the surface of a microdomain can regulate cellular signaling. When the ligand switches between various states induced by chemical interactions or conformational changes, while target activation occurs in only one state, this activation time is affected. We investigate this dynamics using new equations for the sojourn times spent in each state. For two states, we obtain exact solutions in dimension one, and asymptotic ones confirmed by Brownian simulations in dimension 3. We find that the activation time is quite sensitive to changes of the switching rates, which can be used to modulate signaling. Interestingly, our analysis reveals that activation can be fast although the ligand spends most of the time 'hidden' in the non-activating state. Finally, we obtain a new formula for the narrow escape time in the presence of switching." @default.
- W2952809892 created "2019-06-27" @default.
- W2952809892 creator A5007463967 @default.
- W2952809892 date "2009-09-14" @default.
- W2952809892 modified "2023-09-27" @default.
- W2952809892 title "The Gated Narrow Escape Time for molecular signaling" @default.
- W2952809892 hasPublicationYear "2009" @default.
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