PB1-mediated oligomerization of p62/SQSTM1 is essential for its function as a selective autophagy receptor. Here the authors present the cryo-EM structures of human and Arabidopsis PB1 domain helical assemblies and find that a conserved double arginine finger in the PB1 domain is important for p62 polymerisation and lysosomal targeting of p62.
- Arjen J. Jakobi
- Stefan T. Huber
- Carsten Sachse