Peptides have emerged as one of the most versatile classes of biomolecules in modern science. Bridging the gap between small molecules and biologics, they offer high target specificity, low toxicity, and excellent biocompatibility. However, the success of any peptide-based project hinges on one critical phase: peptide design. Whether you are developing a novel therapeutic, mapping an epitope for vaccine development, or creating a specialized research probe, rational peptide sequence design lays the foundation for functional efficacy.