piperidine-2-carboxylic acid, H-Aze-OH and H-Pip-OH) of proline on the stability of the collagen triple helix was examined. Computational and nuclear magnetic resonance spectroscopic studies with model compounds and thermal denaturation experiments with collagen peptides showed that the ring-size analogs destabilize the triple helix to a similar extent by either mismatching backbone dihedral angles ϕ and ψ (Pip)
研究了脯
氨酸的四元和六元环大小类似物(氮杂
环丁烷和
哌啶-2-
羧酸,H-Aze-OH和H-Pip-OH)对胶原三螺旋结构稳定性的影响。使用模型化合物进行的计算和核磁共振波谱研究以及使用
胶原蛋白肽进行的热变性实验表明,环大小类似物会因骨架二面角ϕ和ψ(Pip)不匹配或不利的反式/顺酰胺键的比率(Aze)。