I was wondering if it's possible to make a peptide bond cis instead of the usual trans.
Is there a way to set a cis bond in Foldit?
asks about the same thing.
Now and then I've seen cis peptide bonds
in Foldit. One way to detect them is to
measure the distance between adjacent
alpha-carbons. cis & trans peptide bonds
have different Ca-Ca distances
(2.9 Angstroms for cis and 3.8 Angstroms
for trans). Perhaps using appropriate
bands, you can force a peptide bond to
be cis or trans.