کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1941258 | 1050805 | 2006 | 7 صفحه PDF | دانلود رایگان |

Palmitoylation is a protein modification for trafficking to lipid raft. Without palmitoylation, linker for activation of T cells (LAT), an adaptor molecule mediating T cell receptor signaling, is unable to localize in lipid rafts and to mediate T cell activation. We here show a novel role for palmitoylation in LAT trafficking to the plasma membrane and in the stability of the LAT protein. The human LAT mutant lacking palmitoylation was unable to traffic to the plasma membrane despite the presence of transmembrane portion. The mouse LAT mutant lacking palmitoylation was unstable and susceptible to degradation via the proteasome pathway. The human LAT mutant became unstable when the extracellular portion was swapped for that from mouse, indicating that both palmitoylation and the extracellular portion regulate the stability of LAT. These results suggest that palmitoylation has an important role in trafficking to the plasma membrane and the stability of LAT.
Journal: Biochemical and Biophysical Research Communications - Volume 341, Issue 4, 24 March 2006, Pages 1177–1183