MODEL PROTEIN PRODUCTION FOR TIME-RESOLVED 2D-ELDOR, PDS, AND MQC ESR

这个子项目是利用资源的许多研究子项目之一。 由NIH/NCRR资助的中心拨款提供。对子项目的主要支持 子项目的首席调查员可能是由其他来源提供的， 包括美国国立卫生研究院的其他来源。为子项目列出的总成本可能 表示该子项目使用的中心基础设施的估计数量， 不是由NCRR赠款提供给次级项目或次级项目工作人员的直接资金。 开发方法需要良好的模型系统，PDS当然也是如此。长的有机双自由基、多自由基和超分子组装对鹿的发育起着重要的作用。然而，它们很难合成，需要优秀的有机化学家的专业知识，他们应该对这种合作感兴趣。在我们的DQC方法的发展中，我们不能依赖于此，而是很好地利用了几个可用的双根，距离在10-30°之间。但当我们需要更长的距离时，我们不得不联系冈纳尔·杰施克来获取样本。然而，我们确实发现，例如，DNA双链或某些蛋白质也可以贡献良好的模型系统，并且相对容易在内部生产所需的数量。对于时间分辨2D-Eldor光谱学的项目开发，再加上停止流动或连续快速流动，我们需要大量(高达克)的自旋标记模型蛋白质。例如，T4溶菌酶和钙调蛋白是相对较小和稳定的蛋白质，可以适度地表达所需的数量。总的来说，蛋白质和DNA可以为我们提供所有所需的距离和各种自旋构型。此外，它们与我们的研究更相关。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. Good model systems are needed to develop methods, which is certainly true of PDS. Long organic biradicals, polyradicals, and supramolecular assemblies were instrumental for development of DEER. However they are difficult to synthesize and require expertise of a good organic chemist, who should be interested in such collaborations. In our development of DQC method we could not rely on this but made a good use of few available biradicals with distances in the range of 10-30 ¿. But when we needed a longer distances, we had to reach to Gunnar Jeschke for the sample. However we did find that for example DNA duplexes or some proteins can also contribute good model systems and are relatively easy to produce in house in required quantities. For the project development on time-resolved 2D-ELDOR spectroscopy, coupled with stopped flow or continuous rapid flow, we require large amounts (up to grams) of spin-labeled model proteins. For example T4 Lysozyme and Calmodulin are relatively small and stable proteins that can be expressed in required quantities with a moderate effort. In general proteins and DNA could provide us with all required distances and a variety of spin configurations. Furthermore, they are much more relevant to our research.