Silk fibroin-like structure

Fibroin has a structure in which pleated sheets define parallel planes
in both close and near proximity. The basic sheet arrangement has been
shown in AlphaJoinedSheets.pdf and SheetFormingSChains.pdf.
Fibroin.pdf looks first at extending the links between the
beta180-strands. A chain which can form parallel sheets with different
intersheet spacings is shown next. This chain is modified by extending
its beta180-strands and adding side chains to the main chain units
which compose it to produce a fibroin-like chain. The file and its
references can be downloaded using the "Files for sharing" link of the
website

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