β-Amyloid (1-37)

Beta-amyloid is the main component of amyloid deposits in the AD brain. Beta-amyloid peptides have a heterogeneous C-terminus with the majority composed ofAβ1-40, while a minor product is Aβ 1-42. Additional minor Aβ peptides are also normally produced, such as Beta-amyloid 1-34, 1-37, 1-38 and 1-39, and few reports have quantified the levels of these peptides in the brain.