COBRE: LOUISVILLE RES FOUND INC: CORE D: NMR & PROTEIN PURIFICATION FACILITIES

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 安德鲁·莱恩，Core D总监 CORE的主要目标是为癌细胞和组织的结构分析和代谢组学提供基础设施和支持，并生产适合核磁共振分析的高产率蛋白质。这包括稳定的同位素标记战略，包括N-15和C-13前体。我们的目标仍然是简化数据收集和分析，并引入新的标记策略，以提供关于特定代谢途径的更详细信息。 老牌研究人员和该项目的新成员正在看到核心设施为他们的研究带来的好处。这包括用于通过X射线结晶学、核磁共振和生物物理学进行生物物理分析的蛋白质生产，以及对核心代谢组学能力的广泛使用(见上文)。正在努力确保新征聘人员充分认识到核心设施，并将积极鼓励他们使用独特的能力。 池莉博士(项目6)对使用代谢组学方法了解凋亡蛋白对分离线粒体的代谢影响很感兴趣。 Hong Ye博士(项目5)利用Expression核心设施进行蛋白质生产、建议和分析，并将需要核磁共振功能来对她通过X射线衍射方法解决其结构的蛋白质进行一些功能分析。 切斯尼博士(Cobre毕业生)一直在继续广泛使用该设备，并一直在分析iPFK2和ras表达的代谢后果(以及RNAi敲除的影响)，以及通过hTERT实现永生化的影响，以及在许多类型的细胞中表达大T抗原的影响，包括Jurkat细胞、MCF-7、支气管上皮和成纤维细胞。利用核磁共振设施进行的代谢物图谱和同位素分析是有用的，目的是发现细胞扰动在转化道路上的后果(有时会有令人惊讶的结果)，以及验证(或其他)潜在的抗癌靶标酶。其中一些工作现已出版，其他手稿正在准备中。 Wtenberg博士(Cobre毕业生)正在利用在昆虫细胞和细菌(大肠杆菌)中的瞬时表达来表达鞘氨醇激酶。后一种情况下的酶进入包涵体，必须在纯化后重新折叠。蛋白质表达实验室正在研究基于六丝亲和层析和钙调素亲和层析的纯化方案，这种层析已被证明可以将折叠的SK从未折叠的酶中分离出来。这将用于生物物理研究，包括结晶学、配体结合和核磁共振分析。此外，他一直在使用核磁共振设备分析靶向多肽的溶液性质。

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. Andrew Lane, Core D Director The primary aims of the core are to provide infrastructure for and support to structural analysis and metabolomics of cancer cells and tissue, and for producing proteins in high yield suitable for NMR analysis. This includes stable isotope labeling strategies including N-15 and C-13 precursors. Our goals continue to be to streamline both data collection and analysis as well as introduce new labeling strategies to provide more detailed information about specific metabolic pathways. Established researchers and new recruits to the program are seeing the benefits of the core facility for their research. This includes both protein production for biophysical analyses by X-ray crystallography, NMR and Biophysics, as well as extensive use of the metabolomics capabilities of the Core (see above). Efforts are being made to ensure that new recruits are fully cognizant of the core facilities and will be actively encouraged to use the unique capabilities. Dr. Chi Li (Project 6) is interested in using metabolomics approaches for understanding metabolic consequences of apoptotic proteins on isolated mitochondria. Dr. Hong Ye (Project 5) makes use of the expression core facilities for protein production, advice and analysis and will need the NMR capabilites for some functional analyses of the proteins whose structures she has solved by X-ray diffraction methods. Dr. J. Chesney (COBRE graduate) has continued to make extensive use of the facility and has been analyzing the metabolic consequences of expression of iPFK2 and ras (and effects of RNAi knockdowns) as well as the effects of immortalization via hTERT and large T antigen expression in a number of cell types including Jurkat cells, MCF-7, bronchial epithelia and fibroblasts. Metabolite profiles and isotopomer analyses using the NMR facility have been instrumental is discovering consequences of cellular perturbations on the road to transformation (with sometimes surprising results), as well as validating (or otherwise) potential anticancer target enzymes. Some of this work has now been published and other manuscripts are in preparation. Dr. B. Wattenberg (COBRE graduate) is expressing sphingosine kinase using transient expression in insect cells and also in bacteria (E. coli). The enzyme in the latter case enters inclusion bodies and has to be refolded after purification. The protein expression laboratory is working on purification schemes based on hexahis affinity chromatography, as well as calmodulin affinity chromatography, which has been shown to separate folded SK from unfolded enzyme. This will be used for biophysical studies, including crystallography, ligand binding, and NMR analyses. In addition, he has been analyzing the solution properties of targeting peptides using the NMR facility.