tion 21 of 23
Would you expect Pro—X peptide bonds to tend to have cis conformations like those of X—Pro bonds? Why or why not?
O No, because the R groups of proline and residue X would be farther apart in Pro—X, giving it the characteristics of any other peptide bond.
O Yes, because steric clashes exist for both the cis and trans forms of a Pro—X peptide bond, making both configurations equally likely.
O Yes, because almost all peptide bonds have a cis configuration due to steric repulsion between the two R groups.
O No, because the R groups of proline and residue X would be closer together in Pro—X, favoring the trans configuration.
