Results 41 to 50 of about 3,309 (181)

Singlet Fission in Push–Pull Para‐Azaquinodimethane Films under the Gaze of Time Resolved Optical and Magnetic Spectroscopy

Angewandte Chemie, Volume 138, Issue 6, 2 February 2026.
New push–pull para‐azaquinodimethane derivatives were synthetized through a sustainable protocol. Transient absorption results showed ultrafast intermolecular singlet fission (SF) in film and demonstrated for AsOMe higher triplet energy than for literature SF materials, with intriguing perspectives for photovoltaics toward silicon matched SF.
Martina Alebardi, Angelo Carella, Alessandro Grasso, Enrico Sorbelli, Francesco Lazzarin, Cristina Munzone, Cosimo Gianluca Fortuna, Fausto Elisei, Anna Spalletti, Carmela Bonaccorso, Marilena Di Valentin, Benedetta Carlotti   +11 more
wiley   +2 more sources

Isolation and Identification of Cis-2,5-Diketopiperazine from a Novel Bacillus Strain and Synthesis of Its Four Stereoisomers

Marine Drugs
The Bacillus horneckiae-like strain 2011SOCCUF3 was isolated from the marine sponge Spongia officinalis and its metabolome was studied for secondary metabolites with antimicrobial activity.
Alan M. C. Obled, Refaat B. Hamed, Edward Spence, Marija K. Zacharova, Sunil V. Sharma, Yunpeng Wang, Rosemary Lynch, Helen Connaris, Adina Tatheer, Marie-Lise Bourguet-Kondracki, Gordon J. Florence, Rebecca J. M. Goss   +11 more
doaj   +1 more source

A Diketopiperazine, Cyclo-(L-Pro-L-Ile), Derived From Bacillus thuringiensis JCK-1233 Controls Pine Wilt Disease by Elicitation of Moderate Hypersensitive Reaction

Frontiers in Plant Science, 2020
Pine wilt disease (PWD) caused by the pine wood nematode (PWN) Bursaphelenchus xylophilus is one of the devastating diseases affecting pine forests worldwide.
Ae Ran Park, Se-In Jeong, Hee Won Jeon, Jueun Kim, Namgyu Kim, Manh Tuan Ha, Mohamed Mannaa, Junheon Kim, Chul Won Lee, Byung Sun Min, Young-Su Seo, Jin-Cheol Kim   +11 more
doaj   +1 more source

Isolation and identification of a new tetrahydro-β-carboline diketopiperazine from a predominant endophytic fungus in ancient Camellia taliensis

Guangxi Zhiwu, 2023
To investigate the chemical constituents of Diaporthe tectonigena, a predominant endophytic fungus in the ancient tea tree of Camellia taliensis, the rice solid-state fermentation extract was isolated and purified by silica gel, Diaion HP20 and Sephadex ...
Luyao CHENG, Xiaoxue CHEN, Yingjun ZHANG, Yonglin HUANG, Guolei ZHU, Na LI, Ping ZHAO   +6 more
doaj   +1 more source

Antimicrobial and Biofilm Inhibiting Diketopiperazines

Current Medicinal Chemistry, 2012
Diketopiperazines are the smallest cyclic peptides known. 90% of Gram-negative bacteria produce diketopiperazines and they have also been isolated from Gram-positive bacteria, fungi and higher organisms. Biosynthesis of cyclodipeptides can be achieved by dedicated nonribosomal peptide synthetases or by a novel type of synthetases named cyclopeptide ...
de Carvalho, M P, Abraham, Wolf-Rainer
openaire   +3 more sources

Folding, misfolding, and regulation of intracellular traffic of G protein‐coupled receptors involved in the hypothalamic–pituitary–gonadal axis

Andrology, Volume 14, Issue 4, Page 978-991, May 2026.
Abstract Background G protein‐coupled receptors are a large and functionally diverse family of membrane receptors involved in a number of biological processes. Like other proteins, G protein‐coupled receptors need to be properly folded in order to traffic to the plasma membrane and interact with agonist.
Alfredo Ulloa‐Aguirre, Ross C. Anderson, Teresa Zariñán, Rubén Gutiérrez‐Sagal, Eduardo Jardón‐Valadez, Claire L. Newton   +5 more
wiley   +1 more source

The Fluorescence of Tyrosyl and Tryptophanyl Diketopiperazines

Journal of Biological Chemistry, 1968
Abstract The influence of the peptide group on the quantum yield of phenol and indole has been evaluated from fluorescence measurements on the diketopiperazines of the two chromophores. Strong quenching of both groups occurs in water which is almost completely eliminated in dioxane and dimethyl sulfoxide.
H, Edelhoch, R S, Bernstein, M, Wilchek
openaire   +2 more sources

Safety of nonapeptide–pentapeptide mixture as a novel food pursuant to regulation (EU) 2015/2283

EFSA Journal, Volume 24, Issue 5, May 2026.
Abstract Following a request from the European Commission, the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was asked to deliver an opinion on a nonapeptide–pentapeptide mixture as a novel food (NF) pursuant to Regulation (EU) 2015/2283. The NF is a mixture composed of a 1:1 combination of nonapeptide and pentapeptide.
EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA), Dominique Turck, Torsten Bohn, Montaña Cámara, Jacqueline Castenmiller, Stefaan De Henauw, Ángeles Jos, Alexandre Maciuk, Inge Mangelsdorf, Breige McNulty, Androniki Naska, Kristina Pentieva, Alfonso Siani, Frank Thies, Margarita Aguilera‐Gómez, Thomas Frenzel, Francesca Marcon, Harry J. McArdle, Peter Moldeus, Monika Neuhäuser‐Berthold, Alexandros Siskos, Marcello Laganaro, Irene Nuin Garciarena, Francesco Suriano, Areti Favata, Anna‐Maria Pieger, Francesca Seminati, Karen Ildico Hirsch‐Ernst   +28 more
wiley   +1 more source

Potent Liver‐Tropic mRNA Lipid Nanoparticles: ApoE‐Mediated Delivery Through a Low‐Density Lipoprotein Receptor Independent Uptake Mechanism

Advanced Materials, Volume 38, Issue 22, 17 April 2026.
Helper and ionizable lipids play a crucial role in determining ApoE binding and subsequent liver tropism and LDLR‐mediated uptake. Ionizable lipids primarily govern the LDLR‐independent uptake pathway. This complementary interplay between lipid components ultimately governs LNP delivery performance and therapeutic efficacy in the liver.
Ashish Sarode, Christian Ortiz, Tadeh Derstepanian, Natalia Vargas‐Montoya, Priyal Patel, Nikita Khadse, Saikat Manna, Ryan Landis, Joseph Skaleski, Lianne Boeglin, Hongfeng Deng, Anusha Dias, Hong Wang, Debora Barreiros Petropolis, Barak Yahalom, Shrirang Karve, Frank DeRosa   +16 more
wiley   +1 more source

Exploring the Chemodiversity and Biological Activities of the Secondary Metabolites from the Marine Fungus Neosartorya pseudofischeri

Marine Drugs, 2014
The production of fungal metabolites can be remarkably influenced by various cultivation parameters. To explore the biosynthetic potentials of the marine fungus, Neosartorya pseudofischeri, which was isolated from the inner tissue of starfish Acanthaster
Wan-Ling Liang, Xiu Le, Hou-Jin Li, Xiang-Ling Yang, Jun-Xiong Chen, Jun Xu, Huan-Liang Liu, Lai-You Wang, Kun-Teng Wang, Kun-Chao Hu, De-Po Yang, Wen-Jian Lan   +11 more
doaj   +1 more source