Cover Picture: Crystal Structure of the DFNKF Segment of Human Calcitonin Unveils Aromatic Interactions between Phenylalanines (Chem. Eur. J. 9/2017).

The amyloidogenic peptide, DFNKF, forms a steric zipper. Iodination of this widely studied sequence facilitated crystallization and allowed its high‐resolution single crystal structure determination for the first time. The structure unveils the importance of aromatic–aromatic interactions in stabilizing the amyloid self‐assembly. The amino acid side‐chains of facing β‐strands (shown in red and green, respectively) interdigitate like the teeth of a zipper, similar to that of blue jeans. More information can be found in the Full Paper by P. Metrangolo et al. on page 2051 ff. [ABSTRACT FROM AUTHOR]