Figure 2
The structure of molecule A in (4). Displacement ellipsoids are shown at the 50% probability level. Ellipsoids without shaded segments for theL-Val side chain and the C-terminal carboxylate group show the major orientations (occupancy 0.53); minor orientations (occupancy 0.38) are indicated by dashed lines. A complete alternative position (occupancy 0.09), called molecule E, is shown as a solid line (atomic numbering as for A). L-Val Cγ-atoms were not found for E, and the side chain is drawn as a methyl group. |