Abstract:
:Physiological amyloid aggregation occurs within the nuclei of stress-treated cells. These structures, termed Amyloid bodies (A-bodies), assemble through the rapid accumulation of proteins into dense membrane-less organelles, which possess the same biophysical properties as plaques observed in many amyloid-based diseases. Here, we demonstrate that A-body proteomic compositions vary significantly between stimuli, as constituent proteins can be sequestered by one or more stressors. Stimulus exposure alone was insufficient to induce aggregation, demonstrating that this pathway is not regulated solely by stress-induced conformational changes of the A-body targets. We propose that different environmental conditions induce the formation of A-body subtypes containing distinct protein residents. This selective immobilization of proteins may have evolved as a finely tuned mechanism for surviving divergent stressors.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Marijan D,Tse R,Elliott K,Chandhok S,Luo M,Lacroix E,Audas TEdoi
10.1002/1873-3468.13597subject
Has Abstractpub_date
2019-11-01 00:00:00pages
3162-3172issue
22eissn
0014-5793issn
1873-3468journal_volume
593pub_type
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