Interaction of Fluorescently Labeled Triethyleneglycol and Peptide Derivatives with β-Cyclodextrin
作者:Mohamed-Anis Alouini、El-Farouck Moustoifa、Sandra Rubio-Albenque、Thomas Berthelot、Suzanne Fery-Forgues、Gérard Déléris
DOI:10.1002/cphc.201301032
日期:2014.2.24
times higher for DAC than for MC derivatives. Molecular modeling provided additional information. The UV/Vis absorption and fluorescence properties were studied and the energy transfer process was quantified. Fluorescence quenching was particularly strong for the peptide derivatives. The presence of β‐CDs reduced the FRET efficiency slightly. Dye‐labeled peptide derivatives can thus be used to form inclusion
使用三乙二醇(TEG)链,线性肽和标记有7-甲氧基香豆素-3-羧酸(MC)和7-二乙基氨基香豆素-3-羧酸(DAC)的环肽来彻底研究Förster共振能量转移( FRET)包含在包合物中。1个1 H NMR证据表明,β-环糊精(β-CD)与模型化合物的荧光团部分之间形成了1:1的包合物。DAC的结合常数比MC衍生物的结合常数高20倍。分子建模提供了更多信息。研究了UV / Vis吸收和荧光性质,并对能量转移过程进行了定量。对于肽衍生物,荧光猝灭特别强。β-CD的存在会稍微降低FRET效率。因此,染料标记的肽衍生物可用于与β-CD形成包合物,并保留其大部分FRET特性。这为它们随后用于设计用于测量基质金属蛋白酶活性的分析设备铺平了道路。