Results 151 to 160 of about 27,771,751 (275)

Reply to "Down-to-Earth" is Imperative! On the Problems of Landscape-Ecological Regionalisation by Means of Multivariate Statistical Methods Friedrich Weller (Ravensburg, Germany) in DIE ERDE 2009, 140:113-125 [PDF]

, 2011
Winfried Schröder
openalex   +1 more source

Chemically Fueled Active Transport

Angewandte Chemie International Edition, Accepted Article.
Biology uses chemical potential differences from molecules like ATP to drive membrane pumps, transporting molecules across membranes even against concentration gradients. Here, we report a synthetic system that transports small molecules from an aqueous phase (the sender) to an aqueous receiver across a centimeter‐sized immiscible solvent at the ...
Christine M. E. Kriebisch, Brigitte A. K. Kriebisch, Gregor Häfner, Hector Soria-Carrera, Yanyan Fei, Marcus Müller, Job Boekhoven   +6 more
wiley   +1 more source

Competition between One‐ and Two‐Electron Unimolecular Reactions of Late 3d‐Metal Complexes [(Me3SiCH2)nM]–(M = Fe, Co, Ni, and Cu; n = 2–4)

Angewandte Chemie International Edition, EarlyView.
Gas‐phase fragmentation experiments and theoretical calculations on a series of model complexes determine the intrinsic tendencies of the late 3d metals to undergo one‐versus two‐electron reactions and unravel the factors controlling the selectivity. Abstract Although organometallic complexes of the late 3d elements are known to undergo both one‐and ...
Torben Kühl, Lisa Hetzel, Christopher J. Stein, Konrad Koszinowski   +3 more
wiley   +1 more source

Protonated Glutamate and Aspartate Side Chains Can Recognize Phosphodiester Groups via Strong and Short Hydrogen Bonds in Biomacromolecular Complexes

Angewandte Chemie International Edition, Accepted Article.
Phosphodiester groups occur ubiquitously in nature, e.g. in nucleic acids or in cyclic (di‐)nucleotides important for signal transduction. Proteins often use polar or positively charged amino acids to interact with the negatively charged phosphodiester groups via hydrogen bonds and salt bridges.
Jens Wöhnert, Konstantin Neissner, Elke Duchardt-Ferner, Christoph Wiedemann, Julian Kraus, Ute A. Hellmich   +5 more
wiley   +1 more source

LC‐MS and High‐Throughput Data Processing Solutions for Lipid Metabolic Tracing Using Biorthogonal Click Chemistry

Angewandte Chemie International Edition, Accepted Article.
Tracing lipid metabolism in mammalian cells presents a significant technological challenge due to the vast structural diversity of lipids involved in multiple metabolic routes. Biorthogonal approaches based on click chemistry have revolutionized analytical performance in lipid tracing. When adapted for mass spectrometry (MS), it enables highly specific
Palina Nepachalovich, Stefano Bonciarelli, Gabriele Lombardi Bendoula, Jenny Desantis, Michela Eleuteri, Christoph Thiele, Laura Goracci, Maria Fedorova   +7 more
wiley   +1 more source

Mixing and Matching of Hybrid Megasynthases is a Hub for the Evolution of Metabolic Diversity in Cyanobacteria

Angewandte Chemie International Edition, Accepted Article.
Modular megasynthases, such as polyketide synthases (PKSs) and non‐ribosomal peptide synthetases (NRPSs), are molecular assembly lines that biosynthesize many pharmaceutically and ecologically important natural products. Understanding how these compounds evolve could inspire the artificial evolution of compound diversity by metabolic engineering.
Martin Baunach, Keishi Ishida, Qi Sun, Jonna Teikari, Christian Hertweck, Elke Dittmann, Masahiro Murakami   +6 more
wiley   +1 more source

The Radical Anion, Dianion and Electron Transport Properties of Tetraiodotetraazapentacene

Chemistry – A European Journal, Volume 28, Issue 69, December 9, 2022., 2022
Filling the gap in the series of halogenated azaacenes. Tetraiodotetraazapentacene I4TAP is prepared and characterized. Its stable radical anion and high mobilities in organic field‐effect transistors make I4TAP a formidable n‐type semiconductor.
Thomas Wiesner, Zhu Wu, Jie Han, Lei Ji, Alexandra Friedrich, Ivo Krummenacher, Michael Moos, Christoph Lambert, Holger Braunschweig, Benjamin Rudin, Hilmar Reiss, Olena Tverskoy, Frank Rominger, Andreas Dreuw, Todd B. Marder, Jan Freudenberg, Uwe H. F. Bunz   +16 more
wiley   +1 more source

Erratum to: Lax–Friedrichs Multigrid Fast Sweeping Methods for Steady State Problems for Hyperbolic Conservation Laws [PDF]

, 2015
Weitao Chen, Ching‐Shan Chou, Chiu‐Yen Kao   +2 more
openalex   +1 more source

Pangenome Analysis of the Plant Pathogen Pseudomonas syringae Reveals Unique Natural Products for Niche Adaptation

Angewandte Chemie International Edition, Accepted Article.
Pseudomonas syringae is a soil‐dwelling bacterium that exhibits remarkable niche adaptability and it is known for its devastating impact as a plant pathogen. This bacterium has an outstanding capability to produce a wide array of biologically active natural products. P.
Shuaibing Zhang, Ying Huang, Raed Nachawati, Philipp Huber, Grit Walther, Lucas Gregor, Ivan Vilotijević, Pierre Stallforth   +7 more
wiley   +1 more source

A Photochemical Macrocyclization Route to Asymmetric Strained [3.2] Paracyclophanes

Chemistry – A European Journal, Volume 28, Issue 69, December 9, 2022., 2022
A novel synthetic route to strained cyclophanes is reported, which involves the unexpected photochemical fusion of a carboxylic ester and a non‐activated methyl group. Functional experiments suggest that the previously overlooked C−C bond forming reaction involves an excited triplet state and intramolecular hydrogen abstraction. Using a flow reactor, a
Veit G. Haensch, Helmar Görls, Christian Hertweck   +2 more
wiley   +1 more source