In conclusion, we would like to emphasize two points: first, the importance of the cis conformation of peptide bonds in protein structures, especially if it is a Xaa–nonPro peptide bond ...

In the cis form, water got in and the bonds were broken. "A peptide bond is either cis or trans, and we can change the cis to trans ratio. By doing that, we can mimic the natural state of collagen ...

These included: the “trans” form, which typically forms a triple helix, and the “cis” form, where the peptide bond angles are ...