title: Structural differences in D and L-monellin in the crystals of racemic mixture.
abstract: The racemic mixture of synthetic d and l-monellin has been crystallized, and its structure has been determined by X-ray crystallography at 1.9 A resolution. The crystal structure consists of two d and two l-monellin molecules in the P1 unit cell with a pseudo-centrosymmetrical arrangement. The final structure reveals small but significant structural differences between d and l-monellin in the same crystal. Possible reasons for these differences and their implications are discussed.
authors.affiliation: Department of Chemistry, University of California, Berkeley, CA, 94720, USA.
authors.forename: L W
authors.initials: LW
authors.lastname: Hung
authors.forename: M
authors.initials: M
authors.lastname: Kohmura
authors.forename: Y
authors.initials: Y
authors.lastname: Ariyoshi
authors.forename: S H
authors.initials: SH
authors.lastname: Kim
mesh_terms: D018360:Crystallography, X-Ray; D010940:Plant Proteins / Q000737:chemistry*; D011487:Protein Conformation
chemical_list: D010940:Plant Proteins; C002541:monellin protein, Dioscoreophyllum cumminsii