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Intramolecular Triplet Quenching by Nitroxide Radicals as a Tool for Determining Peptide Secondary Structure in Solution

机译：硝基氧化物基团的分子内三态细胞作为用于测定溶液中肽二级结构的工具

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Quenching of the excited states of a chromophore by a suitable moiety can provide important information on the probe-quencher distance. Singlet quenching through Forster energy transfer has been exploited by us in the determination of the structural features of many ordered oligopeptides in solution, by combining experimental data with molecular modeling studies. Quenching of excited triplet states would extend this approach from the nanoseconds time-region of singlet lifetimes to the microseconds, possibly providing new insights on peptide dynamics. To verify the scope of this method, we have investigated the distance dependence of the intramolecular quenching of the benzophenone triplet of the Bpa residue by the nitroxide radical of TO AC in the oligopeptides listed in Figure 1.

机译：通过合适的部分淬火发色细胞的激发态可以提供关于探针猝灭距离的重要信息。通过组合具有分子建模研究的实验数据，我们通过福尔斯特能量转移通过福尔斯特能量转移来利用福尔斯特能量转移来确定溶液中许多有序寡肽的结构特征。激发的三重态状态的淬火将从单次寿命的纳秒的时间区域扩展到微秒，可能为肽动力学提供新的见解。为了验证该方法的范围，我们研究了在图1中列出的寡肽中的硝基氧化物基团的二氧化物基团的二苯甲酮三体的分子内猝灭的距离依赖性。

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《American Peptide Symposium》|2006年||共2页
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Lorenzo Stella; Gianfranco Bocchinfuso; Emanuela Gatto;
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中图分类 α-氨基酸、肽类、蛋白质、核酸;
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专利

1. CIDEP Effects of Intramolecular Quenching of Singlet and Triplet Excited States by Nitroxide Radicals in Oligopeptides: A Potentially Useful New Method for Investigating Peptide Secondary Structures in Solution [J] . Covaja Carlo, Sartori Elena, Toffoletti Antonio, Chemistry: A European journal . 2000,第15期

机译：寡肽中一氧化氮自由基对单线态和三线态激发态的分子内淬灭的CIDEP效应：研究溶液中肽二级结构的潜在有用的新方法
2. Intramolecular Interaction between Nitroxide Radical and Photoexcited Benzophenone Triplet Linked to Peptide Templates [J] . E. Sartori, A. Toffoletti, F. Rastrelli, The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 2003,第36期

机译：一氧化氮自由基和光激发的苯甲酮三联体之间的分子内相互作用链接到肽模板。
3. C_(60) Derivative Covalently Linked to a Nitroxide Radical: Time-Resolved EPR Evidence of Electron Spin Polarization by Intramolecular Radical-Triplet Pair Interaction [J] . Carlo Corvaja, Michele Maggini, Maurizio Prato, Journal of the American Chemical Society . 1995,第34期

机译：共价链接到一氧化氮自由基的C_（60）衍生物：通过分子内自由基-三重对相互作用的电子自旋极化的时间分辨EPR证据
4. Intramolecular Triplet Quenching by Nitroxide Radicals as a Tool for Determining Peptide Secondary Structure in Solution [C] . Lorenzo Stella, Gianfranco Bocchinfuso, Emanuela Gatto American Peptide Symposium . 2006

机译：硝基氧化物基团的分子内三态细胞作为用于测定溶液中肽二级结构的工具
5. Studies on the effects of substituents on the gas-phase reactions of charged phenyl radicals with allyl iodide, hydrogen atom donors, nitroxides, dienes and small peptides by using mass spectrometry [D] . Heidbrink, Jenny Lea. 2001

机译：质谱法研究取代基对带电苯基与烯丙基碘，氢原子供体，氮氧化物，二烯和小肽的气相反应的影响
6. Comparison of the solution structures of intramolecular DNA triple helices containing adjacent and non-adjacent CG.C+ triplets. [O] . J L Asensio, T Brown, A N Lane 1998

机译：包含相邻和不相邻CG.C +三胞胎的分子内DNA三重螺旋的溶液结构比较。
7. Nitroxide Spin-Label Quenching of Fluorophore’s Triplet Stateas a Tool for Studying Diffusion Mediated Reactions in LipidMembranes [O] . Strömqvist, Johan, Chmyrov, Andriy, Johansson, Sofia, 2010

机译：荧光团三重态的一氧化氮自旋标签猝灭，作为研究脂质膜中扩散介导反应的工具

Intramolecular Triplet Quenching by Nitroxide Radicals as a Tool for Determining Peptide Secondary Structure in Solution

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