Tuesday, June 16, 2026

What Are Peptides? A Beginner-Friendly Guide + My Favorites - Lionheart

What Are Peptides? A Beginner-Friendly Guide + My Favorites - Lionheart

Peptides are short chains of amino acids, which are the building blocks of proteins. While proteins are long, complex structures made of many amino acids, peptides are smaller fragments—typically made up of 2 to 50 amino acids. They function as signaling molecules, meaning they tell cells what to do and when to do it. 

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