... distinguished. Helices B,E, F and H, arranged in an up -and- down topology,form the structural core, whereas the short helices C,D and G on one side, and A, I and J on the other,represent types ... moleculeinvolving a-helix A, the nearby loop, the first and lastturns of helices E and F, and the C-terminus helices I and J. In addition, there is a lysine-rich N- and C-ter-minus, in accordance with the ... b-sheetflanked by a-helices. Five b-strands, labelled from A toE, run all contiguous. The N-terminus of the monomerincludes strand A, an a-helix and a long stretch, and the C-terminal portion includes...