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The monomer unit has: N-terminal Glu-BD(Binding domain) that is composed mostly of -strands

This 83-amino-acid polypeptide features a key structural modification: a substitution of arginine for glutamic acid at position 3, along with a 13-amino-acid N-terminal extension

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The absorption rate and efficacy can vary significantly depending on the formulation, including the presence of penetration enhancers and the overall stability of the product

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