【单选题】Select the one of the following statements that is NOT CORRECT : 下列哪个叙述不正确:
A.
Changes in configuration involve the rupture of covalent bonds. 构型的变化涉及共价键的断裂。
B.
Changes in configuration involve the rotation of one or more single bonds. 构型的改变涉及一个或多个单键的旋转。
C.
Formation of an α-helix is stabilized by the hydrogen bonds between each peptide bond carboxyl oxygen and the N-H group of the fourth peptide bond after it. α- 螺旋的形成通过每个肽键羧基氧和后面第 4 个肽键的 N-H 基团之间的氢键稳定。
D.
In a β-sheet the R-group of adjacent residues point in opposite directions relative to the plane of the sheet. 在 β- 折叠中,相邻残基的 R- 基团位于折叠平面相反的方向。