Quantitative Drosophila pupal wing experiments support planar polarity depending on cell-scale signalling that does not involve depletion of a limited pool of core proteins or polarised transport on microtubules.
Alma Carolina Sanchez Rocha, Mikhail Makarov ... Klára Hlouchová
Amino acids that were abundant since the prebiotic era are enriched in protein binding sites of the most ancient coenzymes, supporting the plausibility of an early coenzyme–peptide world.
Hydration modulates aromatic interactions, explaining why Tyr is a stronger sticker than Phe in aqueous environments like protein condensates but not in the cores of folded proteins.
Songbird HVC sequences arise from a balance of ionic currents and structured inhibition, providing a mechanistic framework for understanding cortical sequence generation.
