| Autor: |
Haffner, Christof, Takei, Kohji, Chen, Hong, Ringstad, Niels, Hudson, Amy, Butler, Margaret Husta, Salcini, Anna Elisabetta, Di Fiore, Pier Paolo, De Camilli, Pietro |
| Zdroj: |
FEBS Letters; December 1997, Vol. 419 Issue: 2-3 p175-180, 6p |
| Abstrakt: |
Synaptojanin 1 is an inositol 5‐phosphatase with a putative role in clathrin‐mediated endocytosis. Goal of this study was to provide new evidence for this hypothesis. We show that synaptojanin 1 is concentrated at clathrin‐coated endocytic intermediates in nerve terminals. Furthermore, we report that synaptojanin‐170, an alternatively spliced isoform of synaptojanin 1, binds Eps15, a clathrin coat‐associated protein. Binding is mediated by the COOH‐terminal region of synaptojanin‐170 which we show here to be poorly conserved from rat to humans, but to contain in both species three asparagine‐proline‐phenylalanine (NPF) repeats. This motif has been found to be the core of the binding site for the EH domains of Eps15. Together with previous data, our results suggest that synaptojanin 1 can be recruited to clathrin‐coated pits via a multiplicity of interactions. |
| Databáze: |
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