Chemistry Letters · 1973 · 48 citations · 3 references
Natural SciencesBiochemistryChemistryCrystal StructureOrganic ChemistryStructural BiologyConformational AnalysisCrystal SystemsMacromolecular StructureMacromolecular Structure DeterminationProtein ConformationSecondary StructureChlorine ChemistryCyclic PeptidesMacromolecular Structure CharacterizationPeptide Structure AnalysisUnit Cell DeterminationUnit Cell GeometryUnit Cell ParametersX-ray Diffraction Analysis
Abstract The molecular structure of the title oligopeptide has been determined by X-ray diffraction methods. The dihydrate crystals contain two independent molecules in the unit cell, and they have a quite similar conformation. The configuration of the two chlorine atoms around the Cβ–Cγ bond of the pyrrolidine ring is nearly gauche. Each molecule contains a β-loop of α-U-folding type.
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Motomu Sato, Takashi Tatsuno · Chemical and Pharmaceutical Bulletin · 1968 · 21 citations · Full text