Toward structural-omics of the bovine retinal pigment epithelium.

Toward structural-omics of the bovine retinal pigment epithelium.
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迈向牛视网膜色素上皮的结构词。

DOI:
10.1016/j.celrep.2022.111876
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发表时间:
2022-12-27
期刊:
影响因子:
8.8
通讯作者:
--
中科院分区:
生物学1区
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--
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使用综合系统生物学方法来研究组织和器官被认为在结构生物学领域是不切实际的,其中该技术主要集中于确定感兴趣的特定生物大分子的结构。在这里,我们报告使用冷冻电子显微镜(cryo-EM),以确定组成的原始牛视网膜色素上皮细胞(RPE)裂解液。从这个样本中,我们同时识别和解决了7种不同的RPE酶的冷冻电镜结构,这些酶的功能影响神经递质再循环、铁代谢、再生、糖酵解、轴突发育和能量稳态。有趣的是,这些重要蛋白质的功能障碍与几种神经退行性疾病直接相关,包括亨廷顿病、肌萎缩侧索硬化症(ALS)、帕金森病、阿尔茨海默病和精神分裂症。我们的工作强调了cryo-EM在原子水平上促进组织和器官蛋白质组学的重要性。Morgan等人使用cryo-EM从原始牛视网膜色素上皮细胞裂解物中同时鉴定和解析七种不同酶的结构。这项工作突出了这种方法在促进原子水平上的生物系统的结构组学的潜力。
The use of an integrated systems biology approach to investigate tissues and organs has been thought to be impracticable in the field of structural biology, where the techniques mainly focus on determining the structure of a particular biomacromolecule of interest. Here, we report the use of cryoelectron microscopy (cryo-EM) to define the composition of a raw bovine retinal pigment epithelium (RPE) lysate. From this sample, we simultaneously identify and solve cryo-EM structures of seven different RPE enzymes whose functions affect neurotransmitter recycling, iron metabolism, gluconeogenesis, glycolysis, axonal development, and energy homeostasis. Interestingly, dysfunction of these important proteins has been directly linked to several neurodegenerative disorders, including Huntington’s disease, amyotrophic lateral sclerosis (ALS), Parkinson’s disease, Alzheimer’s disease, and schizophrenia. Our work underscores the importance of cryo-EM in facilitating tissue and organ proteomics at the atomic level. Morgan et al. use cryo-EM to simultaneously identify and solve the structures of seven different enzymes from a raw bovine retinal pigment epithelium lysate. This work highlights the potential of this methodology in facilitating structural-omics of a biological system at the atomic level.
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