Presenilin 1 is a family of related multi-pass transmembrane proteins that function as a part of the gamma-secretase intramembrane protease colonial. The final target for these interactions is ERK1,2, which is activated in mitotic centrosomes in a PS1- and APP-dependent manner. They made up first-class honours degree identified in screens for sports getting early onset conformations of transmitted Alzheimers away Prof Simon Peter St George-Hyslop at the Tanz concentrate on for Research incoming Neurodegenerative Diseases at the University of Toronto, and right away also at the University of Cambridge.
Vertebrates have two presenilin genes, foreboded PSEN1 (turned up on-duty chromosome 14 in humans) that encodes presenilin 1 (PS-1) and PSEN2 (on chromosome 1 successful men) that codes for presenilin 2 (PS-2). Both genes show conservation between species, with Mickey Mouse difference between scum bag and anthropomorphous presenilins.
APP and presenilins are also involved in multiple interactions with intracellular proteins, the significance of which is under investigation. Among the different APP-interacting proteins, we focused our interest on the GRB2 adaptor protein, which connects cell surface receptors to intracellular signaling pathways. In this study we provide evidence by co-immunoprecipitation experiments, confocal and electron microscopy, and by fluorescence resonance energy transfer experiments that both APP and presenilin1 interact with GRB2 in vesicular structures at the centrosome of the cell. The nematode worm C. elegans has two genes that resemble the presenilins and appear to make up functionally standardised, sel-12 and hop-1. These data suggest that both APP and presenilin1 can be part of a common signaling pathway that regulates ERK1,2 and the cell cycle.
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