Results 191 to 200 of about 2,064,816 (279)

The Role of Cytochrome P450 AbyV in the Final Stages of Abyssomicin C Biosynthesis

Angewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023
The cytochrome P450 enzyme AbyV catalyses a key epoxidation in the final stages of the biosynthesis of the spirotetronate antibiotic abyssomicin C. Combining structural and computational data with a 13C labelling strategy was found to be a powerful approach to interrogate the biotransformation and determine the precise function of the enzyme.
Andrew J. Devine, Alice E. Parnell, Catherine R. Back, Nicholas R. Lees, Samuel T. Johns, Ainul Z. Zulkepli, Rob Barringer, Katja Zorn, James E. M. Stach, Matthew P. Crump, Martin A. Hayes, Marc W. van der Kamp, Paul R. Race, Christine L. Willis   +13 more
wiley   +1 more source

Synthesis and Chiroptical Properties of Chiral Helical Foldamers Based on Highly Fluorescent Dibenzopyrrolo[1,2‐a][1,8]naphthyridines Linked to a Tetraphenylene Core

Asian Journal of Organic Chemistry, EarlyView.
Chiral tetraphenylene derivatives possessing helical motifs were developed by linking multiple dibenzopyrrolo[1,2‐a][1,8]naphthyridine units to a tetraphenylene core. These helical motifs adopted helical conformations in solution and exhibited high fluorescence (φ > 0.8).
Kotaro Matsumura, Masashi Hasegawa, Yoshitaka Tsuchido, Hidetoshi Kawai   +3 more
wiley   +1 more source

Macrocyclic Peptide Probes for Immunomodulatory Protein CD59: Potent Modulators of Bacterial Toxin Activity and Antibody‐Dependent Cytotoxicity

Angewandte Chemie, EarlyView.
This study presents novel macrocyclic peptides with low nanomolar affinity for CD59, an immunomodulatory cell surface receptor associated with human disease. Crystallographic and structure‐activity relationship (SAR) studies reveal peptide CP‐06 mimics the binding of biologically relevant CD59 interaction partners. Dimeric and lipidated CP‐06 analogues
Jasmine K. Bickel, Ammar. I. S. Ahmed, Aidan B. Pidd, Rhodri M. Morgan, Tom E. McAllister, Sam Horrell, Emma C. Couves, Hemavathi Nagaraj, Edward J. Bartlett, Kamel El Omari, Akane Kawamura, Doryen Bubeck, Edward W. Tate   +12 more
wiley   +2 more sources

Brassinin from Brassica campestris L. inhibits colorectal cancer by inducing p62/NRF2/GPX4‐regulated ferroptosis

Animal Models and Experimental Medicine, EarlyView.
BSN suppresses the cell viability of colorectal cancer by inducing GPX4‐regulated ferroptosis. BSN may bind to NRF2 protein to inactivate the NRF2 signaling, inhibiting the expression of p62 and HO‐1. Abstract Background Indole phytoalexins, plant‐derived compounds present in cruciferous vegetables, have demonstrated anticancer properties.
Shi‐Yuan Wen, Rui‐Rui Gao, Yan‐Yan Chen, Yi‐Jie Wang, Xin‐Tong Wang, Hai‐Xin Liu   +5 more
wiley   +1 more source

From Polymers to Rings and Back Again: Chemical Recycling of Polyesters to Macrolactones

Angewandte Chemie, EarlyView.
Here, the chemical recycling of polyesters derived from the ring‐opening copolymerization of cyclic anhydride with epoxide is presented. The polyesters are selectively depolymerized using commercial tin(II) octoate to form 16‐ and 18‐membered lactones with high selectivity and conversions.
Madeleine L. Smith, Thomas M. McGuire, Ryan W. F. Kerr, Charlotte K. Williams   +3 more
wiley   +2 more sources

Manipulation of Chemistry and Biology with Visible Light Using Tetra‐ortho‐Substituted Azobenzenes and Azonium Ions

Angewandte Chemie, EarlyView.
Tetra‐ortho‐Azobenzenes (TOABs) in broad daylight: in recent years, TOAB photoswitches became indispensable tools for all‐visible‐light manipulation of chemistry, biology and materials. This review explores their unique photochemical properties, design and synthetic approaches, offering support in choosing a TOAB for a given application.
Francesca Cardano, Rosa Márquez García, Wiktor Szymanski   +2 more
wiley   +2 more sources

Synthesis and Characterization of Photoswitchable Covalent Ligands for the β2‐Adrenoceptor

Angewandte Chemie, EarlyView.
A structure‐based design of a covalent photoswitchable ligand for the β2‐adrenergic receptor, a therapeutically relevant GPCR, is described. This tool facilitates the modification of the intrinsic activity of the protein by light. Computational analysis of its mechanism of action suggests that the photoswitch takes place within the binding pocket ...
Ulrike Wirth, Eduard Neu, Davide Provasi, Steffen Feustel, Maximilian F. Schmidt, Harald Hübner, Dorothée Weikert, Marta Filizola, Burkhard König, Peter Gmeiner   +9 more
wiley   +2 more sources

Silylation of Aryl and Alkyl Chlorides by a Seven‐Membered Dialkoxysilyl Group Si(pan)Me via an In Situ Generated Silylpotassium

Angewandte Chemie, EarlyView.
This study reveals a facile silylation protocol that enables the delivery of a stable and activatable dioxasilepanyl group, Si(pan)Me, to aryl and alkyl chlorides. Of note is the X‐ray structure of 18‐C‐6·K–Si(pan)Me, which elucidates a pivotal silylpotassium intermediate.
Kenshiro Hitoshio, Jun Shimokawa, Hideki Yorimitsu   +2 more
wiley   +2 more sources

A New Era in Crystallography; X-ray Free Electron Laser

, 2014
G. Kurisu, E. Nishibori
semanticscholar   +1 more source

Engineered Biocatalyst for Enantioselective Hydrazone Reduction

Angewandte Chemie, EarlyView.
Here, we report the discovery and engineering of a hydrazone reductase (HRED) biocatalyst that promotes efficient reduction of protected hydrazones with exceptional stereocontrol. These biotransformations offer a sustainable strategy for synthesizing valuable chiral N─N containing products that are commonly found in pharmaceuticals and agrochemicals ...
Amy E. Hutton, Fei Zhao, Elizabeth Ho, Jack Domenech, Vanessa Harawa, Murray J. B. Brown, Gideon Grogan, Phillip D. Clayman, Nicholas J. Turner, Anthony P. Green   +9 more
wiley   +2 more sources