Results 161 to 170 of about 544,006 (376)

Ribozyme‐Catalyzed Site‐Specific Labeling of RNA Using O6‐alkylguanine SNAP‐Tag Substrates

Angewandte Chemie, EarlyView.
SNAPR is a ribozyme that repurposes O6‐benzylguanine SNAP‐tag substrates for site‐specific labeling of RNA with bioorthogonal alkyne and azide functional groups, fluorophores or photocrosslinkers. The N1A‐alkylated RNA products were converted to N6A‐modified RNA by Dimroth rearrangement.
Manisha B. Walunj, Carolin P. M. Scheitl, Tina Jungnickel, Claudia Höbartner   +3 more
wiley   +2 more sources

A Novel Merocyanine Derivative for Probing Polarity at Cubosome Interfaces

Asian Journal of Organic Chemistry, EarlyView.
This study develops a synthetic route to C10SP, a polarity‐sensitive sensor embedded in phytantriol‐based cubosomes. Strategic steps included tertiary amine‐mediated amidation to covalently attach a hydrophobic tail and controlled nitrogen methylation to form the iminium moiety within the indolenine scaffold.
Marcelo J. Eberhardt, Natália E. T. de Castro, Fabiano S. Rodembusch, Fernanda Poletto   +3 more
wiley   +1 more source

Structural Insight Into a Human H Ferritin@Gold‐Monocarbene Adduct: Aurophilicity Revealed in a Biological Context

Angewandte Chemie, EarlyView.
Human H ferritin (HuHf) is a nanocarrier for anticancer metal drugs. By cryo‐EM, a 1.51 Å structure of its adduct with Au(NHC)Cl was solved, showing a novel tetranuclear gold(I) cluster bound to Cys90 and Cys102. Short inter‐metal distances indicate aurophilic interactions.
Lucrezia Cosottini, Andrea Giachetti, Annalisa Guerri, Ane Martinez‐Castillo, Andrea Geri, Stefano Zineddu, Nicola G. A. Abrescia, Luigi Messori, Paola Turano, Antonio Rosato   +9 more
wiley   +2 more sources

Tuning Antiaromaticity Through Meso‐Substituent Orientation in Core‐Modified Isophlorins

Asian Journal of Organic Chemistry, EarlyView.
The antiaromaticity of dithiadioxaisophlorins is controlled by the steric bulkiness of meso‐substituents through their tilt angle relative to the macrocycle. Bulkier substituents maintain larger angles, preserving stronger antiaromaticity, while smaller groups facilitate π‐conjugation with the macrocycle, diminishing antiaromaticity.
Maika Isoda, Haruna Sugimura, Yusuke Honda, Ken‐ichi Yamashita   +3 more
wiley   +1 more source

Antiparallel β‐Sheet as a Key Motif of Amyloid‐β Inhibitor Designed via Topological Peptide Reprogramming

Angewandte Chemie, EarlyView.
Targeting Amyloid‐β (Aβ) aggregation requires a peptide‐based approach that accounts for the structural heterogeneity of Aβ. Here, we employ topological reprogramming via disulfide bonds to stabilize antiparallel β‐sheets within the dimeric peptide.
Dongjoon Im, Ye Eun Lee, Gyusub Yoon, William A. Goddard III, Tae Su Choi, Hugh I. Kim   +5 more
wiley   +2 more sources

Seminolipid and its precursor/degradative product, galactosylalkylacylglycerol, in the testis of saposin A- and prosaposin-deficient mice

Journal of Lipid Research, 2003
Sphingolipid activator proteins (saposins A, B, C, and D) are derived from a common precursor protein (prosaposin) and specifically activate in vivo degradation of glycolipids with short carbohydrate chains.
Keiko Tadano-Aritomi, Junko Matsuda, Hirokazu Fujimoto, Kunihiko Suzuki, Ineo Ishizuka   +4 more
doaj  

Alterations in gut microbiota and metabolites contribute to postoperative sleep disturbances

Animal Models and Experimental Medicine, EarlyView.
In this study, we classified postoperative patients into poor sleepers (PS) and good sleepers (GS) based on the bispectral index (BIS), and transplanted their fecal microbiota to pseudo‐germ‐free rats to analyze the sleep changes in rats and the potential mechanism.
Hui Zhong, Meiru Jiang, Kun Yuan, Fang Sheng, Xiuyun Xu, Yong Cui, Xijia Sun, Wenfei Tan   +7 more
wiley   +1 more source

Fluoride Enhances Alcohol Binding Within a Trigonal‐Prismatic Metal‐Organic Capsule

Angewandte Chemie, EarlyView.
Steric hindrance from methyl groups orients rectangular ligands “landscape”‐wise, forming a trigonal prismatic capsule with a large cavity. Endohedral functionalization of this capsule via fluoride binding tunes its guest affinity, enhancing the binding of alcohols over ketones and enabling selective perrhenate encapsulation and release, offering an ...
Yuchong Yang, Tanya K. Ronson, Dingyu Hou, Kai H. Luo, Jonathan R. Nitschke   +4 more
wiley   +2 more sources

Identifying the optimal dose of cannabidiol by intrabuccal administration in Kramnik (C3HeB/FeJ) mice

Animal Models and Experimental Medicine, EarlyView.
Cannabidiol (CBD) has numerous therapeutic properties, and is used to treat neurological conditions, such as neuroinflammation. However, the optimal dose of CBD to penetrate the brain requires further investigation. The primary aim of this study was to use a mouse model and the intrabuccal route for CBD administration to determine the optimal dose at ...
Oluwadara Pelumi Omotayo, Siyethemba Bhengu, Kobus Venter, Yolandy Lemmer, Shayne Mason   +4 more
wiley   +1 more source

Development of an Organoautocatalyzed Double σ‐Bond C(sp2)‐N Transamination Metathesis Reaction

Angewandte Chemie, EarlyView.
Organoautocatalyzed transamination metathesis of cyclic tertiary amines is disclosed as a high‐yielding, scalable reaction that proceeds under mild, catalyst‐free conditions. It operates via a multi‐step domino reaction mechanism, where an in situ‐formed pyrrolidinium salt functions as a HBD organoautocatalyst.
Volker Klein, Florian Schuster, Jonas Amthor, Harald Maid, Prabhakar Bijalwan, Fahmi Himo, Stefano Santoro, Svetlana B. Tsogoeva   +7 more
wiley   +2 more sources