Structural Model Of Alzheimer Amyloid A-beta 1-42 Peptide Fibril (image) American Institute of Physics Share Print E-Mail Caption Structural model of Alzheimer Amyloid A-beta 1-42 peptide fibril derived from an experimental structure (PDB: 2MXU). The fibrillar aggregates act as cell-toxins at the onset and the progression of Alzheimer's disease. Credit Emanuel Peter Usage Restrictions This image may be used only with appropriate credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.