The present disclosure provides a novel bridge peptide. The present disclosure provides a bridge peptide comprising a bridge moiety and a peptide moiety, wherein position β is tertiary or quaternary when the carbon at which the bridge moiety attaches to the peptide moiety is in position α. The present disclosure provides a novel bridge peptide, particularly a bridge peptide resulting from stably bridging a peptide that does not possess a hydrogen bond to induce or maintain a secondary structure, e.g., a peptide having a β-strand structure.