single-crystal x-ray diffraction was used to determine the three-dimensional structures of two antigelling oligopeptides , l-lysyl-l-phenylalanyl-l-phenylalanine and l-phenylalanylglycylglycyl-d-phenylalanine , and two antisickling peptide analogues , l-phenylalanine benzyl ester and n-phenylacetyl-l-phenylalanine .
C0028954
oligopeptides
C0030956
peptide