| Literature DB >> 23015596 |
Ian J McGough1, Peter J Cullen.
Abstract
Clathrin has been implicated in retromer-mediated trafficking, but its precise function remains elusive. Given the importance of retromers for efficient endosomal sorting, we have sought to clarify the relationship between clathrin and the SNX-BAR retromer. We find that the retromer SNX-BARs do not interact directly or indirectly with clathrin. In addition, we observe that SNX-BAR-retromer tubules and carriers are not clathrin coated. Furthermore, perturbing clathrin function, by overexpressing a dominant-negative clathrin or through suppression of clathrin expression, has no detectable effect on the frequency of SNX-BAR-retromer tubulation. We propose that SNX-BAR-retromer-mediated membrane deformation and carrier formation does not require clathrin, and hence the role of clathrin in SNX-BAR-retromer function would appear to lie in pre-SNX-BAR-retromer cargo sorting.Mesh:
Substances:
Year: 2012 PMID: 23015596 PMCID: PMC3603510 DOI: 10.1242/jcs.112904
Source DB: PubMed Journal: J Cell Sci ISSN: 0021-9533 Impact factor: 5.285