title: [Structure of molecules of crystalline (Phe1, Ala9)antamanide].
abstract: The molecular structure of a [Phe1, Ala9]antamanide complex with four water molecules has been determined by X-ray analysis. The antamanide's analogue, C64H74N10O10.4H2O, crystallizes in the space group P2(1)2(1)2(1) with a = 15.909, b = 28.071 and c = 14.367 A, Z = 4. The molecule contains a pseudo two-fold rotation axis and two intra-molecular NH...O = C bonds of the 5-->1 type, its conformation being similar to that of antamanide. There are inter-molecular H-bonds over the water molecules in the structure.
authors: A D
authors: AD
authors: Vasil'ev
mesh_terms: D000595:Amino Acid Sequence; D000931:Antidotes / Q000737:chemistry*; D003460:Crystallization; D008969:Molecular Sequence Data; D010456:Peptides, Cyclic / Q000737:chemistry*; D011487:Protein Conformation
chemical_list: D000931:Antidotes; D010456:Peptides, Cyclic; C081059:antamanide, Phe(1)-Ala(9)-; C100265:antamanide
vernacular_title: Stroenie molekul kristallicheskogo (Phe1, Ala9)antamnida.