Abstract
Soluble oligomers of Alzheimer's amyloid beta protein (Abeta) may act as effectors of neurotoxicity in early stages of Alzheimer's disease. Detailed information about the structure of Abeta in atomistic level and the dynamics of assembly of monomeric Abeta into oligomeric structures is rather elusive. We have performed replica exchange molecular dynamics (REMD) simulations on the formation of the dimer and trimer of Abeta10-35 peptide. We have observed spontaneous formation of several basic structural units that may act as a template or an intermediate for further aggregation of Alzheimer's Abeta protein. Various conformers, including interlocking structures of experimentally known bend double beta strands, are identified.
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