Amino acids
Individual building blocks.
START HERE
A useful mental model: amino acids are letters, peptides are short messages, and proteins are longer instructions. It is simplified, but it gives beginners the right starting point.
A peptide is a short chain of amino acids. Many peptides act like biological messages, interacting with receptors or pathways and influencing what happens next.
Different amino-acid sequences have different shapes and can interact with different biological targets.
“Peptide” is a broad category—not a guarantee that every compound has the same safety, approval, or research profile.
For educational purposes only. Not medical advice, diagnosis, treatment, or prescribing guidance. Research and regulatory information can change over time.
THE CHAIN
Individual building blocks.
Short chains with biological roles.
Larger, complex structures.