Weak yet highly species-specific protein-protein interactions enhance the activity of metabolically related enzymes in bacteria at endogenous conditions, but also mean that overexpression of one partner leads to permanent non-physiological complexes and gene dosage toxicity.
A high-resolution method to quantify interactions between lipid bilayers and single proteins under controlled load is presented and applied to key proteins involved in membrane fusion and formation and maintenance of membrane contact sites.
Fluorescence detected sedimentation velocity offers a new method for studying heterogeneous protein interactions in solution by exploiting characteristic temporal signal modulations of photoswitchable fluorescent proteins.
High affinity interactions with transport adaptors are important to shield the interaction surfaces of cytomatrix components to block fatal premature oligomerization of active zone proteins during axonal transport.
Characterization of Drosophila female germ cell differentiation shows that nurse cells initiate Polycomb silencing by regulating Pcl and Scm levels to alter the biochemical properties of the PRC2 H3K27 methylase.