Figure 1
The asymmetric unit of (I), showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 40% probability level and H atoms are shown as small spheres of arbitrary radii. Primed and unprimed atoms connected by open and filled bonds, respectively, illustrate the disorder of the methionine sulfoxide side chain, caused by the presence at the same crystallographic site of both RS and SS isomers. |