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Accumulation and aggregation of β-amyloid (Aβ) peptides result in neuronal death, leading to cognitive dysfunction in Alzheimer’s disease. The self-assembled Aβ molecules form various intermediate aggregates including oligomers that are more toxic to neurons than the mature aggregates, including fibrils. Thus, one strategy to alleviate Aβ toxicity is to facilitate the conversion of Aβ intermediates...
The effects of crowding agents, polyethylene glycol (PEG 20K), Dextran 70, and bovine serum albumin, on the denaturation of homotetrameric d-glyceraldehyde-3-phosphate dehydrogenase (GAPDH, EC 1.2.1.12) in 0.5 M guanidine hydrochloride and the reactivation of the fully denatured enzyme have been examined quantitatively. Increasing the concentration of PEG 20K to 225 mg/ml decreases the rate constant...
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