Cryo-electron microscope for structural and cell biology

用于结构和细胞生物学的冷冻电子显微镜

• 批准号: BB/R000514/1
• 负责人: Richard Pickersgill
• 金额: $ 38.48万
• 依托单位: Queen Mary University of London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=BB%2FR000514%2F1
• 关键词: Cryo; electron; microscope; structural; cell

Unlike conventional electron microscopy (EM), cryo-EM samples are neither dehydrated nor stained and so the structure of samples remain close to the shape for the hydrated structure in the native environment. Large macromolecules and subcellular structures are proving to be excellent targets for cryo-EM. We are applying for funds for the acquisition of a cryo-electron microscope (cryo-EM) to transform the impact of our research in structural molecular biology and cell biology. Recent advances, which include direct electron detectors and data processing to correct for molecular movement in the electron beam, have revolutionised cryo-electron microscopy making it possible to determine atomic resolution structures of macromolecules and nano-machines. The results will be transformative for research in structural biology and cell biology at Queen Mary University of London. This proposal is especially timely as we have recently employed structural biologists who need access to cryo-EM (Darbari, Garnett, Milanesi), just secured access to a Titan Krios for high-resolution data collection (Pickersgill co-I), and we have a number of active and of developing projects in healthy ageing through the lifecourse, combating antimicrobial resistance, synthetic biology and bioenergy for which cryo-EM will provide a step-change in understanding the biology of the systems. We also have several existing staff who need to access cryo-EM, both single particle analysis and cryo-tomography to allow ultrastructural imaging. Finally, we have four further appointments to make in these areas in 2017/18. The equipment will also transform our ability to train the next generation of researchers, both our undergraduate students (MSci) and PhD students including those from the BBSRC LIDO DTP.

与传统的电子显微镜（EM）不同，冷冻EM样品既不脱水也不染色，因此样品的结构保持接近天然环境中水合结构的形状。大的大分子和亚细胞结构被证明是冷冻EM的优秀目标。我们正在申请资金用于购买冷冻电子显微镜（cryo-EM），以改变我们在结构分子生物学和细胞生物学研究的影响。最近的进展，包括直接电子探测器和校正电子束中分子运动的数据处理，彻底改变了低温电子显微镜，使确定大分子和纳米机器的原子分辨率结构成为可能。这一结果将对伦敦玛丽女王大学的结构生物学和细胞生物学研究产生变革性影响。这项建议是特别及时的，因为我们最近聘请了结构生物学家谁需要访问冷冻电镜（Darbari，Garnett，Milanesi）刚刚获得了Titan Krios的访问权限，用于高分辨率数据收集（Pickersgill co-I），我们有一些积极的和发展中的项目，在整个生命周期的健康老龄化，打击抗菌素耐药性，合成生物学和生物能源，其中cryo-EM将为理解系统的生物学提供一个步骤。我们也有几个现有的工作人员谁需要访问cryo-EM，无论是单粒子分析和cryo-tomography允许超微结构成像。最后，我们在2017/18年度将在这些领域作出四项任命。这些设备还将改变我们培养下一代研究人员的能力，包括我们的本科生（MSci）和博士生，包括来自BBSRC LIDO DTP的学生。

项目成果

Cryoelectron-microscopy structure of the enteropathogenic Escherichia coli type III secretion system EspA filament.

肠病性大肠杆菌 III 型分泌系统 EspA 丝的冷冻电子显微镜结构。

• DOI: 10.1073/pnas.2022826118
• 发表时间: 2021
• 期刊: Proceedings of the National Academy of Sciences of the United States of America
• 影响因子: 11.1
• 作者: Zheng,Weili;Peña,Alejandro;Ilangovan,Aravindan;Baghshomali,YasamanNaemi;Frankel,Gad;Egelman,EdwardH;Costa,TiagoRD
• 通讯作者: Costa,TiagoRD

Molecular and cellular insight into Escherichia coli SslE and its role during biofilm maturation.

• DOI: 10.1038/s41522-022-00272-5
• 发表时间: 2022-02-25
• 期刊: NPJ biofilms and microbiomes
• 影响因子: 9.2
• 作者: Corsini PM;Wang S;Rehman S;Fenn K;Sagar A;Sirovica S;Cleaver L;Edwards-Gayle CJC;Mastroianni G;Dorgan B;Sewell LM;Lynham S;Iuga D;Franks WT;Jarvis J;Carpenter GH;Curtis MA;Bernadó P;Darbari VC;Garnett JA
• 通讯作者: Garnett JA

Architecture of the outer-membrane core complex from a conjugative type IV secretion system.

• DOI: 10.1038/s41467-021-27178-8
• 发表时间: 2021-11-25
• 期刊: Nature communications
• 影响因子: 16.6
• 作者: Amin H;Ilangovan A;Costa TRD
• 通讯作者: Costa TRD