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peptide can perform a wide range of functions in the human body, depending upon the amino acid involved. Some can regulate hormones, for instance, while others take part in antibiotic function. Our body is also equipped to break down and reuse peptides. If someone eats meat, the enzymes in his / her intestines break down theprotein at its amide bonds to create an assortment of peptides which may be digested or excreted, depending on the needs of the body.