Osmora Scientific Glossary
Protein
A large polypeptide — a long chain of amino acids joined by peptide bonds — typically of sufficient length to fold into a defined three-dimensional structure associated with a biological function.
In plain language
A big peptide. Same chemistry, but long enough to fold into a stable working shape.
Why it matters in research
The peptide/protein distinction is one of size and structure, not of different underlying chemistry.
Where you'll encounter it
Comparisons of peptides vs proteins and discussions of structure.
Related terms
Related Academy lessons
Source
- IUPAC. "Peptides." Compendium of Chemical Terminology (Gold Book), 5th ed., 2025. doi:10.1351/goldbook.P04479