BUILDING UP THE FACILITY FOR MEMBRANE PROTEIN MANIPULATION AND SPIN LABELING

这个子项目是许多研究子项目中的一个 由NIH/NCRR资助的中心赠款提供的资源。子项目及 研究者（PI）可能从另一个NIH来源获得了主要资金， 因此可以在其他CRISP条目中表示。所列机构为 研究中心，而研究中心不一定是研究者所在的机构。 ACERT的主要活动之一是旨在开发提高生物医学研究吞吐量的技术。这一重要活动旨在加强ACERT的核心研究和合作，同时也通过开发更灵敏、生产率更高的脉冲ESR光谱仪来促进其服务和传播活动。鉴于提高灵敏度具有最高优先级，因此不应将此任务与PDS光谱学的另一面（样品制备部分）隔离考虑，因为样品的良好质量对于实现高通量也至关重要。为了实现这一目标，我们正在建立一个小型但设备齐全的本地设施，适合各种蛋白质的生化操作。重点将放在膜蛋白的研究和日常活动将解决有效的蛋白质自旋标记;我们希望通过能够制备和研究新鲜的膜蛋白样品来提高我们工作的质量，因为它们通常非常脆弱，不能耐受过度的操作，例如冷冻/解冻循环。它将能够根据特定的蛋白质开发最有效的自旋标记方案，从而帮助我们的合作者有限或缺乏能力来分析自旋标记和优化PDS研究的样品。ACERT工作人员将为ACERT用户提供ESR光谱样品制备方面的支持和培训，特别是脉冲偶极ESR。 我们相信，这样的设施将有助于我们的生物医学研究的灵活性和优点，并将支持中心的效率。 此外，这样的设施将使ACERT科学家能够通过提供现场访问标准技术，如荧光光谱和圆二色性，定期应用补充ESR研究的方法。这将加强我们现有的研究，使我们能够快速实施新的想法，这将有利于合作项目，核心研究和服务活动。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. One of the major activities at ACERT is aimed at developing technologies for increasing the throughput of biomedical research. This important activity is poised to strengthen ACERT core research and collaborations, but also to benefit its service and dissemination activates by means of developing more sensitive and thereby considerably more productive pulse ESR spectrometers. Given that increasing sensitivity carries the highest priority, this task should not be considered in isolation from the other side of PDS spectroscopy in the part of sample preparation, since sample good quality is also essential for achieving high throughput. To address this goal, we are setting up a small but well-equipped local facility, suited for variety of biochemical manipulation with proteins. The emphasis will be given to the research on membrane proteins and everyday activities will be addressing efficient protein spin labeling; reconstitutions into liposomes, nanodisks or bicelles, dialysis, sample concentration, etc. We expect to improve the quality of our work by having been able to prepare and study fresh membrane protein samples, since they often are very delicate and do not tolerate excessive manipulations, for example freezing/thawing cycles. It will enable developing the most efficient protocols for spin-labeling, depending on the particular protein, thus helping our collaborators who have limited or lacking capacity to assay spin-labeling and optimize samples for PDS study. ACERT user support and training in sample preparation for ESR spectroscopy, in particular for pulsed dipolar ESR will be provided by ACERT staff. We are confident that such facility will contribute to the flexibility and merits of our biomedical research and will back the efficiency of the center. Additionally, such a facility will enable ACERT scientists to apply routinely the methods complementary to the ESR studies by providing on site access to standard techniques, such as fluorescent spectroscopy and circular dichroism. This will strengthen our existing research, and enable us to quickly implement the new ideas, which will be beneficial for collaborative projects, core research, and service activities.