Results 111 to 120 of about 105,946 (257)

Protonation‐Gated Orthogonal Control of Highly Efficient Molecular Motors With Broad Visible‐Light Responsiveness

Angewandte Chemie, EarlyView.
Reversible protonation gates coumarin‐based overcrowded‐alkene molecular motors by dynamically reshaping their conjugation topology. This strategy enables efficient, near‐quantitative unidirectional photoisomerization from blue–green to red‐shifted visible light up to 600 nm, while preserving motor function and allowing orthogonal light, heat, and acid/
Jinghao Wang, Alexander Ryabchun, Ben L. Feringa   +2 more
wiley   +2 more sources

The Critical Role of Fractionated Urine Glycosaminoglycans in the Evaluation of Mucopolysaccharidosis Type II in Four Unrelated Families

American Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Since 2015, Ann and Robert H. Lurie Children's Hospital has performed diagnostic testing for infants who screen positive for mucopolysaccharidosis type II (MPS II) on the Illinois newborn screen. Preliminary diagnostic testing includes measurement of plasma iduronate‐2‐sulfatase enzyme activity and urinary glycosaminoglycan analysis, followed ...
Carly A. Rasmussen, Monika Izdebski, Allison Paltzer, Rachel Hickey, Laura Pollard, Joshua Baker   +5 more
wiley   +1 more source

Generation of the Camptothecin Scaffold by a Flavin‐Catalyzed Photooxidative Skeletal Reorganization

Angewandte Chemie, EarlyView.
The biosynthetic pathway of the anticancer drug precursor camptothecin involves an enigmatic skeletal reorganization from a 6/5/6 tetrahydro‐β‐carboline to a 6/6/5 pyrroloquinoline ring system. Here, we show that this transformation can be achieved by photooxidation with flavin cofactors, such as flavin mononucleotide (FMN) as catalysts.
Shenyu Liu, Zeliang Zhang, Benedikt Seligmann, Van Hung Bui, Tuan‐Anh Minh Nguyen, Thu‐Thuy T. Dang, Jakob Franke   +6 more
wiley   +2 more sources

Detection of homogentisic acid by electrospray ionization mass spectrometry. [PDF]

J Clin Lab Anal, 2023
Tokuhara Y, Ohara K, Morinishi T, Yamaguchi K, Tada S.   +4 more
europepmc   +1 more source

Liposomal Delivery of L‐2‐Hydroxyglutarate for Targeting Epigenetic Dysregulation in Osteoarthritis

Advanced NanoBiomed Research, EarlyView.
Osteoarthritis involves cartilage degeneration, inflammation, and epigenetic dysregulation. A liposomal formulation of the TET1 inhibitor L‐2‐hydroxyglutarate to overcome rapid joint clearance was developed. The formulation showed good physicochemical properties, reduced inflammatory and catabolic gene expression in chondrocytes, and alleviated ...
Denise Murgia, Akshay Pandey, Raffaele Spanò, Bianca Martins Estevão, Roberto Palomba, Greta Avancini, Tamaghna Gupta, Ana Maria Lopez Estevez, Stuart B. Goodman, Nidhi Bhutani, Paolo Decuzzi   +10 more
wiley   +1 more source

Chemoenzymatic Synthesis of Well‐Defined α(2,8)‐ and α(2,9)‐Linked Oligosialosides

Angewandte Chemie, EarlyView.
Well‐defined α(2,8)‐ and α(2,9)‐linked oligosialic acids of different lengths can be prepared by employing recombinant bacterial polysialyltransferases in combination with chemically modified CMP‐Neu5Ac derivatives. After transfer, a sialoside is formed bearing an artificial entity, which blocks further glycosylation.
Jelle A. Fok, Keshav Kishor, Mehman I. Bunyatov, Gerlof P. Bosman, Geert‐Jan Boons   +4 more
wiley   +2 more sources

Wooden-Tip Electrospray Ionization Mass Spectrometry Combined With Machine Learning for Differentiating Thyroid Tumours. [PDF]

Anal Sci Adv
Liu DS, Liu L, Wang B, Zhang J, Lin HG, Huang XX, Deng KJ, Zhou YT, Pan Y, Hu B, Huang XY.   +10 more
europepmc   +1 more source

Human Leukocyte Elastase Triggered Nanoparticles for Targeted Antimicrobial Delivery and Oral Microbial Modulation

Advanced NanoBiomed Research, EarlyView.
This study explores enzyme‐responsive nanoparticles for targeted antimicrobial release in inflamed oral environments. Nanoparticles formed by complexing peptides and chlorhexidine respond to human leukocyte elastase and release chlorhexidine selectively. P7 (ECAAPVCE)‐based formulations show optimal properties and stability, with antimicrobial activity
Mohammed A. Hadis, Ignacio Insua, Farah N. S. Raja, Álvaro Vila, William M. Palin, Michael R. Milward, Paul R. Cooper, Sarah A. Kuehne, Owen Addison, Paco Fernandez‐Trillo   +9 more
wiley   +1 more source

Flavin Catalysts in Organic Synthesis

Angewandte Chemie, EarlyView.
Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley   +2 more sources

Negative Gaseous Ions in Positive-Voltage Electrospray Ionization Mass Spectrometry. [PDF]

Anal Chem
Wang XB, Ochirov O, Ke BC, Abu Bakar NH, Raju CM, Marginean I, Urban PL.   +6 more
europepmc   +1 more source