Analysis of lattice-translocation disorder in the layered hexagonal structure of carboxysome shell protein CsoS1C

TsaiY.; SawayaM.R.; YeatesT.O.

首页> 外文期刊>Acta crystallographica.Section D. Biological crystallography >Analysis of lattice-translocation disorder in the layered hexagonal structure of carboxysome shell protein CsoS1C

【24h】

Analysis of lattice-translocation disorder in the layered hexagonal structure of carboxysome shell protein CsoS1C

机译：分析lattice-translocation障碍的分层carboxysome六角结构的壳蛋白质CsoS1C

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

Lattice-translocation or crystal order-disorder phenomena occur when some layers or groups of molecules in a crystal are randomly displaced relative to other groups of molecules by a discrete set of vectors. In previous work, the effects of lattice translocation on diffraction intensities have been corrected by considering that the observed intensities are the product of the intensities from an ideal crystal (lacking disorder) multiplied by the squared magnitude of the Fourier transform of the set of translocation vectors. Here, the structure determination is presented of carboxysome protein CsoS1C from Halothio-bacillius nea-politanus in a crystal exhibiting a lattice translocation with unique features. The diffraction data are fully accounted for by a crystal unit cell composed of two layers of cyclic protein hexamers. The first layer is fully ordered (i.e. has one fixed position), while the second layer randomly takes one of three alternative positions whose displacements are related to each other by threefold symmetry. Remarkably, the highest symmetry present in the crystal is P3, yet the intensity data (and the Patterson map) obey 6/m instead of symmetry; the intensities exceed the symmetry expected from combining the crystal space group with an inversion center. The origin of this rare phenomenon, known as symmetry enhancement, is discussed and shown to be possible even for a perfectly ordered crystal. The lattice-translocation treatment described here may be useful in analyzing other cases of disorder in which layers or groups of molecules are shifted in multiple symmetry-related directions.

机译：Lattice-translocation或水晶有序无序现象发生在一些层或组分子晶体是随机流离失所相对于其他群体的分子离散向量的集合。晶格易位对衍射的影响纠正了强度考虑观察到的强度的产品理想晶体的强度(缺乏障碍)乘以平方的大小的傅里叶变换的易位向量。提出了carboxysome CsoS1C的蛋白质表现出独特的晶格易位特性。占一个水晶单位细胞组成的两层循环六聚体蛋白质。层完全命令(即有一个固定的随机位置),而第二层三种替代的位置位移是相互关联的三倍对称。对称出现在水晶P3,然而强度数据(和帕特森地图)服从6 / m而非对称;从结合晶体对称性预期空间群与一个反演中心。这种罕见的现象,称为对称增强,是讨论和证明可能即使对于完美有序的晶体。描述的lattice-translocation治疗这里在分析其他情况下可能是有用的障碍层或组的分子在多个symmetry-related转移吗的方向。

著录项

来源
《Acta crystallographica.Section D. Biological crystallography》 |2009年第9期|980-988|共9页
作者
TsaiY.; SawayaM.R.; YeatesT.O.;
展开▼
作者单位

Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA, United States;

Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA;

展开▼
收录信息
原文格式 PDF
正文语种英语
中图分类化学;
关键词
order-disorder; HEXAMER; Fourier TransformcrystalsSymmetrydiscrete setmodulated structureclose-packed hexagonal structureunit cell;

机译：有序无序;六聚体;傅里叶TransformcrystalsSymmetrydiscrete setmodulatedstructureclose-packed六角structureunit细胞;

相似文献

外文文献
中文文献

1. Analysis of overall stability bearing capacity of single-layer shell structures under high temperature condition [J] . BAI Yin, ZHAI JianLei, SHI YongJiu, 中国科学通报：英文版 . 2013,第007期
2. Shell Model for Elastic and Thermodynamic Properties of Gallium Nitride with Hexagonal Wurtzite Structure [J] . CHENG Yan, TU Ya-Jing, ZENG Zhao-Yi, 理论物理通讯：英文版 . 2008,第012期
3. Shell Model for Elastic and Thermodynamic Properties of Gallium Nitride with Hexagonal Wurtzite Structure [J] . CHENG Yan, TU Ya-Jing, ZENG Zhao-Yi, 理论物理通讯（英文版） . 2008,第012期
4. Bio-inspired protein–gold nanoconstruct with core–void–shell structure: beyond a chemo drug carrier [O] . 刘祥友, Wei W, Huang SJ, 2013

机译：Bio-inspired protein–gold nanoconstruct with core–void–shell structure: beyond a chemo drug carrier

Analysis of lattice-translocation disorder in the layered hexagonal structure of carboxysome shell protein CsoS1C

摘要

著录项

相似文献

相关主题

期刊订阅