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Penta-fibrillar assembly: A Building block collagen based materials
Five tropocollagen molecules assemble along the corners of regular pentagon.
The polar cavity size of the assembly seems to vary from 7-10A depending on the hydration processes.
There is a smartness in the way the penta-fibrils behave in collagen based biomaterials. It is one of the intriguing nano material with a size of about 4 nano meter diagonal size. There are several intermolecular forces that participate in the penta fibrillar assembly, which derive importance in smart behavior of collagen.