LC3 forms functional nanoclusters on autophagosomes.

LC3B forms approximately 150 nm nanoclusters on autophagosomes, crucial for autophagy functions and pathogen clearance.

• Why it matters: Understanding how LC3B organizes at high density is essential to elucidate its role in autophagy and host defense mechanisms, which are vital for cellular health.
• What they did: Using molecular dynamics simulations and super-resolution microscopy, 296 LC3B clusters were analyzed, leading to the identification of a clustering interface and creation of mutants to test its function.
• The result: Disrupting LC3B clustering impairs autophagosome motility and reduces bacterial clearance, highlighting nanoclusters as key organizers of autophagic processes.