The Design and Synthesis of Alanine-Rich α-Helical Peptides Constrained by an <i>S</i>,<i>S</i>-Tetrazine Photochemical Trigger: A Fragment Union Approach
作者:Joel R. Courter、Mohannad Abdo、Stephen P. Brown、Matthew J. Tucker、Robin M. Hochstrasser、Amos B. Smith
DOI:10.1021/jo402680v
日期:2014.1.17
The design and synthesis of alanine-rich α-helical peptides constrained in a partially unfolded state by incorporation of the S,S-tetrazine phototrigger has been achieved, permitting, upon photochemical release, observation by 2D-IR spectroscopy of the subnanosecond conformational dynamics that govern the early steps associated with α-helix formation. Solid-phase peptidesynthesis was employed to elaborate
通过掺入S , S-四嗪光触发剂,设计和合成了限制在部分未折叠状态的富含丙氨酸的 α-螺旋肽,允许在光化学释放时通过 2D-IR 光谱观察亚纳秒构象动力学控制与α-螺旋形成相关的早期步骤。采用固相肽合成来制作必需的片段,通过溶液相片段缩合构建完整的肽。片段结合策略也用于构建13 C= 18 O 同位素编辑的酰胺,以允许直接观察特定肽键处或附近的构象运动。