N-myristoyltransferases (NMTs) are members of the large family of GCN5-related N-acetyltransferases (GNATs). NMTs mainly catalyze eukaryotic protein myristoylation, an essential modification tagging protein N-termini and allowing successive subcellular membrane targeting. NMTs use myristoyl-CoA (C14:0) as major acyl donor. NMTs were recently found to react with unexpected substrates including lysine side-chains and acetyl-CoA. This chapter details the kinetic approaches that have allowed the characterization of the unique catalytic features of NMTs in vitro.
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http://dx.doi.org/10.1016/bs.mie.2023.02.018 | DOI Listing |
Langmuir
January 2025
Surface Science Laboratory, Graduate School of Engineering, Toyota Technological Institute, 2-12-1, Hisakata, Tempaku, Nagoya, Aichi 468-8511, Japan.
Hydrogen-substituted graphdiyne (HsGDY) is a two-dimensional material with an sp-sp carbon skeleton featuring a band gap and a porous structure that enhances ion diffusion. In previous reports, HsGDY growth was limited to metal substrates such as Cu, which then required transfer. Here, we developed a sandwich method that allows HsGDY to be grown directly on the target substrate.
View Article and Find Full Text PDFAnal Bioanal Chem
January 2025
School of Life Sciences, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, China.
Hydrogen peroxide (HO) is a critical signaling molecule with significant roles in various physiological processes in plants. Understanding its regulation through in situ monitoring could offer deeper insights into plant responses and stress mechanisms. In this study, we developed a microneedle electrochemical sensor to monitor HO in situ, offering deeper insights into plant stress responses.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States.
Chiral medium-sized rings, albeit displaying attractive properties for drug development, suffer from numerous synthetic challenges due to difficult cyclization steps that must take place to form these unusually strained, atropisomeric rings from sterically crowded precursors. In fact, catalytic enantioselective cyclization methods for the formation of chiral seven-membered rings are unknown, and the corresponding eight-membered variants are also sparse. In this work, we present a substrate preorganization-based, enantioselective, organocatalytic strategy to construct seven- and eight-membered rings featuring chirality that is intrinsic to the ring in the absence of singular stereogenic atoms or single bond axes of chirality.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
January 2025
Beijing National Laboratory for Condensed Matter Physics, Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
The glucose-6-phosphatase (G6Pase) is an integral membrane protein that catalyzes the hydrolysis of glucose-6-phosphate (G6P) in the endoplasmic reticulum lumen and plays a vital role in glucose homeostasis. Dysregulation or genetic mutations of G6Pase are associated with diabetes and glycogen storage disease 1a (GSD-1a). Studies have characterized the biophysical and biochemical properties of G6Pase; however, the structure and substrate recognition mechanism of G6Pase remain unclear.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Shanghai Jiaotong University, 800 Dongchuan Road, Minhang District, Shanghai, CHINA.
Diabetes significantly increases the risk of serious health issues, including prolonged skin inflammation and delayed wound healing, owing to inferior glucose control and suppression of the immune system. Although traditional hydrogen (H2) therapy is slightly effective, its ability to tailor the release of H2 on the skin is limited. Accordingly, this study proposed a novel strategy for electrocatalytic H2 release under neutral conditions to promote wound healing in diabetic mice and rabbit.
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