Identify the Binding Interface between Calsenilin and Presenilin 1 C-Terminal Fragment
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چکیده
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Defining the interface between the C-terminal fragment of alpha-transducin and photoactivated rhodopsin.
A novel combination of experimental data and extensive computational modeling was used to explore probable protein-protein interactions between photoactivated rhodopsin (R*) and experimentally determined R*-bound structures of the C-terminal fragment of alpha-transducin (Gt(alpha)(340-350)) and its analogs. Rather than using one set of loop structures derived from the dark-adapted rhodopsin sta...
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Calsenilin is a member of the recoverin family of neuronal calcium-binding proteins that we have previously shown to interact with presenilin 1 (PS1) and presenilin 2 (PS2) holoproteins. The expression of calsenilin can regulate the levels of a proteolytic product of PS2 (Buxbaum, J. D., Choi, E. K., Luo, Y., Lilliehook, C., Crowley, A. C., Merriam, D. E., and Wasco, W. (1998) Nat. Med. 4, 1177...
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The cleavage of the transmembrane amyloid precursor protein (APP) by beta-secretase leaves the C-terminal fragment of APP, C99, anchored in the plasma membrane. C99 is subsequently processed by gamma-secretase, an unusual aspartyl protease activity largely dependent on presenilin (PS), generating the amyloid beta-peptide (Abeta) that accumulates in the brain of patients with Alzheimer's disease...
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Most cases of autosomal-dominant familial Alzheimer's disease are linked to mutations in the presenilin genes (PS1 and PS2). In addition to modulating beta-amyloid production, presenilin mutations also produce highly specific and selective alterations in intracellular calcium signaling. Although the molecular mechanisms underlying these changes are not known, one candidate molecular mediator is...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 2015
ISSN: 0006-3495
DOI: 10.1016/j.bpj.2014.11.614