4G55 image
Entry Detail
PDB ID:
4G55
Keywords:
Title:
Clathrin terminal domain complexed with pitstop 2
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2012-07-17
Release Date:
2012-08-01
Method Details:
Experimental Method:
Resolution:
1.69 Å
R-Value Free:
0.21
R-Value Work:
0.17
R-Value Observed:
0.17
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Clathrin heavy chain 1
Chain IDs:A
Chain Length:369
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
Role of the clathrin terminal domain in regulating coated pit dynamics revealed by small molecule inhibition.
Cell(Cambridge,Mass.) 146 471 484 (2011)
PMID: 21816279 DOI: 10.1016/j.cell.2011.06.025

Abstact

Clathrin-mediated endocytosis (CME) regulates many cell physiological processes such as the internalization of growth factors and receptors, entry of pathogens, and synaptic transmission. Within the endocytic network, clathrin functions as a central organizing platform for coated pit assembly and dissociation via its terminal domain (TD). We report the design and synthesis of two compounds named pitstops that selectively block endocytic ligand association with the clathrin TD as confirmed by X-ray crystallography. Pitstop-induced inhibition of clathrin TD function acutely interferes with receptor-mediated endocytosis, entry of HIV, and synaptic vesicle recycling. Endocytosis inhibition is caused by a dramatic increase in the lifetimes of clathrin coat components, including FCHo, clathrin, and dynamin, suggesting that the clathrin TD regulates coated pit dynamics. Pitstops provide new tools to address clathrin function in cell physiology with potential applications as inhibitors of virus and pathogen entry and as modulators of cell signaling.

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