Figure 3
Hydrogen-bonded sheet of (I). Colour coding as in Fig. 2, except that H3 atoms connecting sheets appear in yellow. The side chains are shown as small spheres. A single L-Met molecule of the adjacent sheet is shown in black wireframe representation. O2i is at (x, −y + , z − ), O2ii at (x, −y + , z − ) and O1iii at (−x + 1, y − , −z + ) (Table 2). The blue arrow has the same meaning as in Fig. 2. |