September 2007 issue
Cover illustration: Several single-crystal diffraction studies have been reported for L-asparagine monohydrate, but until now no determination of the structure of anhydrous L-asparagine. The molecules exist in their zwitterionic form but have quite different C=O bond lengths due to different hydrogen-bond environments. The conformation of the side chain is trans, which distinguishes it sigificantly from that of L-asparagine monohydrate. See Yamada, Hashizume, Shimizu & Yokoyama [Acta Cryst. (2007), E63, o3802-o3803].