Apr 2, 2020

Modeling the Degradation Effects of AutophagosomeTethering Compounds (ATTEC)

BioRxiv : the Preprint Server for Biology
h. zhangBoxun Lu

Abstract

Autophagy is a powerful protein degradation pathway with limited specificity. Our recent study proposed and demonstrated a potential strategy to harness autophagy to selectively degrade a specific pathogenic protein using autophagosome tethering compounds (ATTEC). ATTEC interact with both the target protein and the autophagosome protein LC3, and thus tether the target protein to the autophagosomes for subsequent degradation. The concentration-dependent curve of the target protein is U-shaped, but there has been lack of both kinetic and steady-state modeling of the degradation effects of ATTEC. Here we established a simplified model describing the kinetics and steady-state level of target protein, and characterized how compounds' properties, especially binding affinities to LC3 and to the target protein, may influence their degradation effects.

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