LEVELS OF STRUCTURE. “Finally, the interaction between several tertiary units of a biopolymer forms the quaternary structure, for instance the fibrils in the collagen example in Figure 15. The analogy in the nonclassical crystallization scenario is the mesocrystal. with an either self-determined morphology (this is the usual case) or a morphology determined by an external template, which is likely the case for some biominerals.”
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