The Intact Human Acetylcholinesterase C-Terminal Oligomerization Domain Is α-Helical <i>in Situ</i> and in Isolation, but a Shorter Fragment Forms β-Sheet-Rich Amyloid Fibrils and Protofibrillar OligomersMatthew G. Cottingham, David J. Vaux, Jan L. A. Voskuil|Biochemistry|2003Cited by 25