1H NMR studies quantify the abilities of achiral amino acids to communicate a left-handed screw-sense preference from one helical Aib4 domain to another: certain quaternary amino acids (e.g. Ac6c) act as effective conductors of conformational preference while others (e.g. diphenylglycine) acts as insulators.
1H NMR研究表明,非手性
氨基酸能够传递从螺旋Aib4结构域到另一个结构域的左旋螺向偏好:某些四级
氨基酸(如Ac6c)能有效传递构象偏好,而其他
氨基酸(如双苯甘
氨酸)则起到绝缘体的作用。