Site-specific ¹⁹F chemical shift and side chain relaxation analysis can be applied on large size proteins. Here, one-dimensional ¹⁹F spectra and T₁, T₂ relaxation data were acquired on a SH3 domain in aqueous buffer containing 60% glycerol, and a nine-transmembrane helices membrane protein diacyl-glycerol kinase (DAGK) in dodecyl phosphochoine (DPC) micelles. The high quality of the data indicates that this method can be applied to site-specifically analyze side chain internal mobility of membrane proteins or large size proteins.
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http://dx.doi.org/10.1002/pro.545 | DOI Listing |
Chem Commun (Camb)
January 2025
State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China.
The synthesis of polymers with well-defined composition, architecture, and functionality has long been a focal area of research in the field of polymer chemistry. The advancement of controlled radical polymerization (CRP) has facilitated the synthesis of precise polymers, which are endowed with new properties and functionalities, thereby exhibiting a wide range of applications. However, radical polymerization faces several challenges, such as oxygen intolerance, and common thermal initiation methods may lead to side reactions and depolymerization.
View Article and Find Full Text PDFJ Chem Inf Model
January 2025
Max-Planck-Institut für Immunbiologie und Epigenetik (MPI-IE), Stübeweg 51, 79108 Freiburg im Breisgau, Germany.
Intrinsically disordered regions are found in most eukaryotic proteins and are enriched with positively and negatively charged residues. While it is often convenient to assume that these residues follow their model-compound p values, recent work has shown that local charge effects (charge regulation) can upshift or downshift side chain p values with major consequences for molecular function. Despite this, charge regulation is rarely considered when investigating disordered regions.
View Article and Find Full Text PDFJ Chem Inf Model
January 2025
Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, China.
Tryptophan participates in important life activities and is involved in various metabolic processes. The indole and aromatic binuclear ring structure in tryptophan can engage in diverse interactions, including π-π, π-alkyl, hydrogen bonding, cation-π, and CH-π interactions with other side chains and protein targets. These interactions offer extensive opportunities for drug development.
View Article and Find Full Text PDFNat Chem Biol
January 2025
Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, NC, USA.
Peptide cyclization is a defining feature of many bioactive molecules, particularly in the ribosomally synthesized and post-translationally modified peptide (RiPP) family of natural products. Although enzymes responsible for N- to C-terminal macrocyclization, lanthipeptide formation or heterocycle installation have been well documented, a diverse array of cyclases have been discovered that perform crosslinking of aromatic side chains. These enzymes form either biaryl linkages between two aromatic amino acids or a crosslink between one aliphatic amino acid and one aromatic amino acid.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
College of Medicine, Jiaxing University, Jiaxing 314001, PR China. Electronic address:
Ganoderma lucidum is a traditional Chinese medicine used to treat Alzheimer's disease (AD), whose main active ingredient is polysaccharides. A heteropolysaccharide named GLPZ-1 was isolated from Ganoderma lucidum. GLPZ-1 (6.
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