Within the dense molecular architecture of the brain's synapses, where experience is converted into lasting memory, a key protein called CaMKIIα has been found to organize itself into chain-like structures under the crowded conditions that mirror real neural junctions. Researchers from Kanazawa University and partner institutions, using high-speed atomic force microscopy, observed this self-assembly in real time — a process that may explain how synapses accumulate the molecular resources needed to strengthen communication and encode learning. A mutation linked to intellectual disability disrup