| http://purl.uniprot.org/citations/12732633 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/12732633 | http://www.w3.org/2000/01/rdf-schema#comment | "Uncoating of clathrin-coated vesicles requires the J-domain protein auxilin for targeting hsc70 to the clathrin coats and for stimulating the hsc70 ATPase activity. This results in the release of hsc70-complexed clathrin triskelia and concomitant dissociation of the coat. To understand the complex role of auxilin in uncoating and clathrin assembly in more detail, we analyzed the molecular organization of its clathrin-binding domain (amino acids 547-813). CD spectroscopy of auxilin fragments revealed that the clathrin-binding domain is almost completely disordered in solution. By systematic mapping using synthetic peptides and by site-directed mutagenesis, we identified short peptide sequences involved in clathrin heavy chain and AP-2 binding and evaluated their significance for the function of auxilin. Some of the binding determinants, including those containing sequences 674DPF and 636WDW, showed dual specificity for both clathrin and AP-2. In contrast, the two DLL motifs within the clathrin-binding domain were exclusively involved in clathrin binding. Surprisingly, they interacted not only with the N-terminal domain of the heavy chain, but also with the distal domain. Moreover, both DLL peptides proved to be essential for clathrin assembly and uncoating. In addition, we found that the motif 726NWQ is required for efficient clathrin assembly activity. Auxilin shares a number of protein-protein interaction motifs with other endocytic proteins, including AP180. We demonstrate that AP180 and auxilin compete for binding to the alpha-ear domain of AP-2. Like AP180, auxilin also directly interacts with the ear domain of beta-adaptin. On the basis of our data, we propose a refined model for the uncoating mechanism of clathrin-coated vesicles."xsd:string |
| http://purl.uniprot.org/citations/12732633 | http://purl.org/dc/terms/identifier | "doi:10.1074/jbc.m303738200"xsd:string |
| http://purl.uniprot.org/citations/12732633 | http://purl.uniprot.org/core/author | "Frank R."xsd:string |
| http://purl.uniprot.org/citations/12732633 | http://purl.uniprot.org/core/author | "Kalthoff C."xsd:string |
| http://purl.uniprot.org/citations/12732633 | http://purl.uniprot.org/core/author | "Alves J."xsd:string |
| http://purl.uniprot.org/citations/12732633 | http://purl.uniprot.org/core/author | "Scheele U."xsd:string |
| http://purl.uniprot.org/citations/12732633 | http://purl.uniprot.org/core/author | "Ungewickell E."xsd:string |
| http://purl.uniprot.org/citations/12732633 | http://purl.uniprot.org/core/author | "Duwel M."xsd:string |
| http://purl.uniprot.org/citations/12732633 | http://purl.uniprot.org/core/date | "2003"xsd:gYear |
| http://purl.uniprot.org/citations/12732633 | http://purl.uniprot.org/core/name | "J Biol Chem"xsd:string |
| http://purl.uniprot.org/citations/12732633 | http://purl.uniprot.org/core/pages | "25357-25368"xsd:string |
| http://purl.uniprot.org/citations/12732633 | http://purl.uniprot.org/core/title | "Molecular and functional characterization of clathrin- and AP-2-binding determinants within a disordered domain of auxilin."xsd:string |
| http://purl.uniprot.org/citations/12732633 | http://purl.uniprot.org/core/volume | "278"xsd:string |
| http://purl.uniprot.org/citations/12732633 | http://www.w3.org/2004/02/skos/core#exactMatch | http://purl.uniprot.org/pubmed/12732633 |
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