Figure 11 Electron-density maps of the trypsin structure calculated at 3.5  Å (green), 3.0  Å (blue) and 2.8  Å (magenta) resolution and SAD phases from one Ca2+ and 14 S atoms contoured at 1. (a), (b) and (c) The electron density maps of -sheet (Gln50-Ser54, Ser84-Val90 and Ile103-Lys109). Only main-chain atoms are displayed. (d), (e) and (f) The electron-density map covering residues Asp102-Lys107.

© International Union of Crystallography 2003