Journal: Communications Chemistry
Article Title: Competitive protein recruitment in artificial cells
doi: 10.1038/s42004-024-01229-9
Figure Lengend Snippet: a Schematic overview of affinity-based uptake of a client peptide of the 14-3-3 hub protein in a specific coacervate population. Two isoforms of His-tagged 14-3-3 are anchored in separate terpolymer-stabilized coacervates by means of their interaction with Ni-NTA-amylose in the coacervates. b Schematic overview of inter-coacervate signaling based on 14-3-3 interactions. PKA phosphorylates a phosphorylation-dependent and coacervate-anchored client protein (competitor, gray), which displaces an initially bound, but mobile, client protein (moderate binder, green) and facilitates the release of the mobile client protein into bulk solution. Subsequently, the green client protein is taken up into the receiver population of coacervates. 14-3-3, PKA, and the phosphorylation-dependent client protein are immobilized in the coacervates by means of interactions between their His-tag and Ni-NTA-amyloses.
Article Snippet: The combined fractions were extensively dialyzed against coacervate buffer (20 mM HEPES, 100 mM KCl, pH 7.5, freshly prepared with 100 µM tris(2-carboxyethyl)phosphine (TCEP) using membrane tubing with a molecular weight cut-off (MWCO) of 12–14 kDa (Fisher Scientific).
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