Peptides stand out from the crowd of biological molecules for a few reasons. First, their size sits perfectly in the Goldilocks zone—not too big like proteins, not too small like small molecules—which allows them to interact with biological targets with high specificity. Second, peptides can fold into unique shapes, enabling them to mimic or block biological functions. And third, their natural origin means they’re often well-tolerated by the body, making them excellent candidates for drug development.
