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Journal article

Phase Separation and Ageing of Glycine-Rich Protein from Tick Adhesive

Authors : Ganar, Ketan A. (2023)

Hard ticks feed on their host for multiple days. To ensure firm attachment, they secrete a protein-rich saliva that eventually forms a solid cement cone. The underlying mechanism of this liquid-to-solid transition is not yet understood. This study focuses on the phase transitions of a disordered glycine- rich protein (GRP) that is prominent in tick saliva. We show that GRP undergoes liquid-liquid phase separation via simple coacervatio...

Journal article

Structural basis of actin filament assembly and aging

Authors : Oosterheert, Wout (2023)

The dynamic turnover of actin filaments (F-actin) controls cellular motility in eukaryotes and is coupled to changes in the F-actin nucleotide state. It remains unclear how F-actin hydrolyzes ATP and subsequently undergoes subtle conformational rearrangements that ultimately lead to filament depolymerization by actin-binding proteins. Here, we present cryo-EM structures of F-actin in all nucleotide states, polymerized in the presence of Mg2+ or Ca2+, ...