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Cis‐nonProline and twisted peptides. A, Time course for percent of PDB deposits each year with ≥ 30‐fold too many cis‐nonProline peptides, in 3 phases: first low, then high for 10 years and, after recognition, now abruptly decreasing. B, MolProbity graphics markup for cis‐nonPro (lime green) and for twisted peptides (>30°, in yellow), with the twist line emphasized.
