A molecule consisting of two amino acids linked together by a chemical bond, representing the smallest possible protein chain.
From 'di-' (two) and 'peptide' (a chain of amino acids bonded together). The term emerged from 20th-century biochemistry when scientists began isolating and naming protein fragments.
Dipeptides are like molecular Lego blocks—when you eat protein, your stomach breaks it down into these two-amino-acid pieces before your small intestine reassembles them into thousands of different proteins your body needs!
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