Abstract
ClpG is a novel autonomous disaggregase found in Pseudomonas aeruginosa that confers resistance to lethal heat stress. The mechanism by which ClpG specifically targets protein aggregates for disaggregation is unknown. In their recent work published in JBC, Katikaridis etal. (2023) identify an avidity-based mechanism by which four or more ClpG subunits, through specific N-terminal hydrophobic residues located on an exposed β-sheet loop, interact with multiple hydrophobic patches on an aggregated protein substrate. This study establishes a model for substrate binding to a prokaryotic disaggregase that should inform further investigations into other autonomous disaggregases.
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