Presenilin function and gamma-secretase activity
نویسندگان
چکیده
منابع مشابه
Moonlighting activity of presenilin in plants is independent of gamma-secretase and evolutionarily conserved.
Presenilins (PS) provide the catalytic activity for gamma-secretase, which cleaves physiologically relevant substrates including Notch, ErbB4, and APP. Recent genetic studies indicated that the contribution of PS1 to mouse development includes gamma-secretase-independent functions that cannot be easily explained by any of the demonstrated or hypothesized functions of this protein. To begin a no...
متن کاملPresenilin/gamma-secretase cleaves CD46 in response to Neisseria infection.
CD46 is a type I transmembrane protein with complement and T cell regulatory functions in human cells. CD46 has signaling and receptor properties in immune and nonimmune cells, many of which are dependent on the expression of cytoplasmic tail (cyt) isoforms cyt1 or cyt2. Little is known about how cyt1 and cyt2 mediate cellular responses. We show that CD46-cyt1 and CD46-cyt2 are substrates for p...
متن کاملThe extreme C terminus of presenilin 1 is essential for gamma-secretase complex assembly and activity.
The gamma-secretase complex catalyzes the cleavage of the amyloid precursor protein in its transmembrane domain resulting in the formation of the amyloid beta-peptide and the cytoplasmic APP intracellular domain. The active gamma-secretase complex is composed of at least four subunits: presenilin (PS), nicastrin, Aph-1, and Pen-2, where the presence of all components is critically required for ...
متن کاملTranscriptional regulation of the presenilin-1 gene controls gamma-secretase activity.
Inhibition of basal JNK activity by JNK inhibitor SP600125 or JNK1siRNA repressed presenilin-1 (PS1) expression in SK-N-SH cells by augmenting the level of p53, a repressor of the PS1 gene (1). We now showed that repression of PS1 transcription by JNK inhibitor SP600125 inhibited gamma-secretase mediated processing of amyloid precursor protein (APP) resulting in the accumulation of C99 fragment...
متن کاملDysregulation of Hypoxia-Inducible Factor by Presenilin/ Gamma-Secretase Loss-of-Function Mutations
Presenilin (PSEN) 1 and 2 are the catalytic components of the Gamma-secretase complex, which cleaves a variety of proteins, including the amyloid precursor protein (APP). Proteolysis of APP leads to the formation of the APP intracellular domain (AICD) and amyloid Beta that is crucially involved in the pathogenesis of Alzheimer’s disease. Prolyl-4-hydroxylase-domain (PHD) proteins regulate the h...
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ژورنال
عنوان ژورنال: Journal of Neurochemistry
سال: 2005
ISSN: 0022-3042,1471-4159
DOI: 10.1111/j.1471-4159.2005.03099.x