Published: February 23, 2013Received: October 15, 2012Released on J-STAGE: February 23, 2013Accepted: October 30, 2012
Advance online publication: February 07, 2013
Revised: -
Human amyloid-β peptide 1-42 (Aβ) was subjected to a radical reaction by using ascorbic acid and CuCl2. The percentage of D-aspartic acid (D-Asp) after 24 h had increased to 6.69 ± 0.09%, this being comparable with the reported D-Asp concentration of purified core amyloids in Alzheimer's disease patients. This racemization was significantly inhibited by radical scavengers. L-Alanine was also racemized during the same reaction.
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