21. The dihedral angle is approximately 90?. 22. For example, the PPII backbone dihedral angles are often observed in achiral amino acid glycine. 23. The first approach uses discrete variables for representing coordinates or dihedral angles of the protein structure. 24. AE is the cosine of the dihedral angle along an AE edge . " C" 25. The icosahedron is unique among the Platonic solids in possessing a dihedral angle not less than 120? 26. However, the vertex figures of Catalan solids are regular, and they have constant dihedral angles . 27. In 3-dimensional hyperbolic space, the dihedral angle of a polyhedron depends on its size. 28. The other two dihedral angles in the peptide bond determine the local shape assumed by the protein backbone. 29. This means that a dihedral angle of 40 allows for ideal position of the peroxide sigma star orbital. 30. All twin tail arrangements with a tail dihedral angle will provide a combination of longitudinal and directional stabilization.
