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排序方式: 共有1145条查询结果,搜索用时 15 毫秒
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Dr. Birgit Habenstein Dr. Antoine Loquet Songhwan Hwang Karin Giller Dr. Suresh Kumar Vasa Dr. Stefan Becker Dr. Michael Habeck Prof. Dr. Adam Lange 《Angewandte Chemie (International ed. in English)》2015,54(40):11691-11695
Type 1 pili are filamentous protein assemblies on the surface of Gram‐negative bacteria that mediate adhesion to host cells during the infection process. The molecular structure of type 1 pili remains elusive on the atomic scale owing to their insolubility and noncrystallinity. Herein we describe an approach for hybrid‐structure determination that is based on data from solution‐state NMR spectroscopy on the soluble subunit and solid‐state NMR spectroscopy and STEM data on the assembled pilus. Our approach is based on iterative modeling driven by structural information extracted from different sources and provides a general tool to access pseudo atomic structures of protein assemblies with complex subunit folds. By using this methodology, we determined the local conformation of the FimA pilus subunit in the context of the assembled type 1 pilus, determined the exact helical pilus architecture, and elucidated the intermolecular interfaces contributing to pilus assembly and stability with atomic detail. 相似文献
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Lotta T. Tegler Guillaume Nonglaton Frank Büttner Karin Caldwell Tony Christopeit U. Helena Danielson Karin Fromell Thomas Gossas Anders Larsson Paola Longati Thomas Norberg Ramesh Ramapanicker Johan Rydberg Lars Baltzer 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2011,123(8):1863-1867
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Karin Schwarzenberger Thomas Köllner Hartmut Linde Thomas Boeck Stefan Odenbach Kerstin Eckert 《Advances in colloid and interface science》2014
According to the seminal theory by Sternling and Scriven [1], solutal Marangoni convection during mass transfer of surface-active solutes may occur as either oscillatory or stationary instability. With strong support of Manuel G. Velarde, a combined initiative of experimental works, in particular to mention those of Linde, Wierschem and coworkers, and theory has enabled a classification of dominant wave types of the oscillatory mode and their interactions. In this way a rather comprehensive understanding of the nonlinear evolution of the oscillatory instability could be achieved. A comparably advanced state-of-the-art with respect to the stationary counterpart seemed to be out of reach a short time ago. Recent developments on both the numerical and experimental side, in combination with assessing an extensive number of older experiments, now allow one to draw a more unified picture. By reviewing these works, we show that three main building blocks exist during the nonlinear evolution: roll cells, relaxation oscillations and relaxation oscillations waves. What is frequently called interfacial turbulence results from the interaction between these partly coexisting basic patterns which may additionally occur in different hierarchy levels. The second focus of this review lies on the practical importance of such convection patterns concerning their influence on mass transfer characteristics. Particular attention is paid here to the interaction between Marangoni and buoyancy effects which frequently complicates the pattern formation even more. To shed more light on these dependencies, new simulations regarding the limiting case of stabilizing density stratification and vanishing buoyancy are incorporated. 相似文献
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Stephen R. Doty Karin Erdmann Stuart Martin Daniel K. Nakano 《Mathematische Zeitschrift》1999,232(1):137-182
We give a complete classification of the classical Schur algebras and the infinitesimal Schur algebras which have tame representation
type. In combination with earlier work of some of the authors on semisimplicity and finiteness, this completes the classification
of representation type of all classical and infinitesimal Schur algebras in all characteristics.
Received October 17, 1997; in final form March 5, 1998 相似文献