what is the name of the protein in the brain when you have alzheimer's
Alzheimer's disease has been identified as a protein misfolding disease (proteopathy), caused by plaque accumulation of abnormally folded amyloid beta protein, and tau protein in the brain. Plaques are made up of small peptides, 39â43 amino acids in length, called amyloid beta (A Î²). A Î² is a fragment from the larger amyloid precursor protein (APP).