helices

例如正常人血红蛋白β亚基的第6位氨基酸是谷氨酸，而镰刀形贫血患者的血红蛋白中，谷氨酸变成了缬氨酸，即酸性氨基酸被中性氨基酸替代，仅此一个氨基酸之差，本是水溶性的血红蛋白，就聚集成丝，相互粘着，导致红细胞变形成为镰刀状而极易破碎，产生镰刀形红细胞性贫血（sickle cell anemia）。这种由蛋白质

[12.] Arnott S, Scott W E, Rees D A, et al. I-Carrageenan: molecular structure and packing ofpolysaccharide double helices in oriented fibres of divalent cation salts[J]. Journal of MolecularBiology, 1974, 90(2): 253-267.[13. ]Chandrasekaran, R., Radha A, and Thailambal ...

Solvent-induced supramolecular isomerism in silver(I) 2-methylimidazolate.CrystEngComm, 2006, 8, 351–355;[12] Xiao-Chun Huang, Jie-Peng Zhang,Yan-Yong Lina and Xiao-Ming Chen. Triple-stranded helices and zigzag chains ofcopper(I) 2-ethylimidazolate: solvent polarity-induced supramole...