Download MendeleyA novel all helix fold of the AP180 amino-terminal domain for phosphoinositide binding and clathrin assembly in synaptic vesicle endocytosis.
Mao, Y., Chen, J., Maynard, J.A., Zhang, B., Quiocho, F.A.(2001) Cell 104: 433-440
- PubMed: 11239400
- DOI: https://doi.org/10.1016/s0092-8674(01)00230-6
- Primary Citation of Related Structures:
1HX8 - PubMed Abstract:
Clathrin-mediated endocytosis plays a major role in retrieving synaptic vesicles from the plasma membrane following exocytosis. This endocytic process requires AP180 (or a homolog), which promotes the assembly and restricts the size of clathrin-coated vesicles. The highly conserved 33 kDa amino-terminal domain of AP180 plays a critical role in binding to phosphoinositides and in regulating the clathrin assembly activity of AP180. The crystal structure of the amino-terminal domain reported herein reveals a novel fold consisting of a large double layer of sheets of ten alpha helices and a unique site for binding phosphoinositides. The finding that the clathrin-box motif is mostly buried and lies in a helix indicates a different site and mechanism for binding of the domain to clathrins than previously assumed.
Organizational Affiliation:
Structural and Computational Biology and Molecular Biophysics Graduate Program, Baylor College of Medicine, Houston, TX 77030, USA.
