Chemoreceptors in Caulobacter crescentus: Trimers of Receptor Dimers in a Partially Ordered Hexagonally Packed Array

Cezar M. Khursigara; Xiongwu Wu; Sriram Subramaniam

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Chemoreceptors in Caulobacter crescentus: Trimers of Receptor Dimers in a Partially Ordered Hexagonally Packed Array

机译：新月形杆菌中的化学感受器：部分有序六角包装阵列中的受体二聚体的三聚体

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Chemoreceptor arrays are macromolecular complexes that form extended assemblies primarily at the poles of bacterial cells and mediate chemotaxis signal transduction, ultimately controlling cellular motility. We have used cryo-electron tomography to determine the spatial distribution and molecular architecture of signaling molecules that comprise chemoreceptor arrays in wild-type Caulobacter crescentus cells. We demonstrate that chemoreceptors are organized as trimers of receptor dimers, forming partially ordered hexagonally packed arrays of signaling complexes in the cytoplasmic membrane. This novel organization at the threshold between order and disorder suggests how chemoreceptors and associated molecules are arranged in signaling assemblies to respond dynamically in the activation and adaptation steps of bacterial chemotaxis.

机译：化学感受器阵列是大分子复合物，主要在细菌细胞的两极形成扩展的组件并介导趋化性信号转导，最终控制细胞的运动性。我们已经使用了低温电子断层扫描技术来确定信号分子的空间分布和分子结构，这些信号分子包含野生型新月形芽孢杆菌细胞中的化学感受器阵列。我们证明化学受体组织为受体二聚体的三聚体，在细胞质膜中形成信号复合体的部分有序六边形堆积阵列。这种新颖的组织处于有序和无序之间，表明化学感受器和相关分子如何在信号传导组件中排列，从而在细菌趋化性的激活和适应步骤中动态响应。

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《Journal of bacteriology》 |2008年第20期|共6页
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Cezar M. Khursigara; Xiongwu Wu; Sriram Subramaniam;
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1. Bacterial chemoreceptor arrays are hexagonally packed trimers of receptor dimers networked by rings of kinase and coupling proteins [J] . Ariane Briegel, Xiaoxiao Li, Alexandrine M. Bilwes, Proceedings of the National Academy of Sciences of the United States of America . 2012,第10期

机译：细菌化学感受器阵列是受体二聚体的六边形堆积三聚体，由激酶环和偶联蛋白环网
2. Location and architecture of the Caulobacter crescentus chemoreceptor array. [J] . Briegel A, Ding HJ, Li Z, Molecular Microbiology . 2008,第1期

机译：新月形细菌化学感受器阵列的位置和结构。
3. Activated chemoreceptor arrays remain intact and hexagonally packed. [J] . Briegel A, Beeby M, Thanbichler M, Molecular Microbiology . 2011,第3期

机译：活化的化学感受器阵列保持完整并六角形堆积。
4. Processing of Cardiac Optical Mapping Data for Cameras with Hexagonally Packed Photodiode Array. K-means Cluster Map for Experimental Data Analysis [C] . Artem Razumov, Konstantin Ushenin, Victoria Potekhina, Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology . 2019

机译：具有六角形封装光电二极管阵列的相机的心脏光学映射数据的处理。用于实验数据分析的K均值聚类图
5. The genetics of metal uptake in Caulobacter crescentus : Characterization of regulators and identification of receptors [D] . Howell, Leah Williamson 2010

机译：新月形芽孢杆菌金属摄取的遗传学：调节剂的表征和受体的鉴定
6. Chemoreceptors in Caulobacter crescentus: Trimers of Receptor Dimers in a Partially Ordered Hexagonally Packed Array [O] . Cezar M. Khursigara, Xiongwu Wu, Sriram Subramaniam 2008

机译：新月形杆菌中的化学感受器：部分有序六角包装阵列中的受体二聚体的三聚体
7. Chemoreceptors in Caulobacter crescentus: Trimers of Receptor Dimers in a Partially Ordered Hexagonally Packed Array▿ † [O] . Khursigara, Cezar M., Wu, Xiongwu, Subramaniam, Sriram 2008

机译：新月形杆菌中的化学感受器：部分有序六角包装阵列中的受体二聚体的三聚体▿†
8. Hexagonal close-packed arrays of optical fibers for partitioning a laser beam into individual beamlets: Analysis and prototype fabrication [R] . Klingsporn, P. E. 1997

机译：六角紧密排列的光纤阵列，用于将激光束分成单独的小束：分析和原型制造

Chemoreceptors in Caulobacter crescentus: Trimers of Receptor Dimers in a Partially Ordered Hexagonally Packed Array

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