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Autoactive CNGC15 enhances root endosymbiosis in legume and wheat.
Nature
January 2025
Cell and Developmental Biology Department, John Innes Centre Norwich Research Park, Norwich, UK.
Nutrient acquisition is crucial for sustaining life. Plants develop beneficial intracellular partnerships with arbuscular mycorrhiza (AM) and nitrogen-fixing bacteria to surmount the scarcity of soil nutrients and tap into atmospheric dinitrogen, respectively. Initiation of these root endosymbioses requires symbiont-induced oscillations in nuclear calcium (Ca) concentrations in root cells.
View Article and Find Full Text PDFRevealing the reaction path of UVC bond rupture in cyclic disulfides with ultrafast x-ray scattering.
Sci Adv
January 2025
Department of Chemistry, Brown University, Providence, RI, USA.
Disulfide bonds are ubiquitous molecular motifs that influence the tertiary structure and biological functions of many proteins. Yet, it is well known that the disulfide bond is photolabile when exposed to ultraviolet C (UVC) radiation. The deep-UV-induced S─S bond fragmentation kinetics on very fast timescales are especially pivotal to fully understand the photostability and photodamage repair mechanisms in proteins.
View Article and Find Full Text PDFSemirational Protein Engineering of a Decarboxylative Aldolase for Regiodivergent and Stereodivergent Synthesis of Cyclic Imino Acids.
Angew Chem Int Ed Engl
January 2025
Shanghai Institute of Materia Medica Chinese Academy of Sciences, Chemical Biology Research Center, 201203, Shanghai, CHINA.
Aldolases are powerful C-C bond-forming enzymes for asymmetric organic synthesis because of their supreme stereoselectivity, diverse electrophiles and nucleophiles, and promising scalability. Stereodivergent engineering of aldolases to tune the selectivity for the synthesis of stereoisomers of chiral molecules is highly desirable but has rarely been reported. This study documented the semirational engineering of the decarboxylative aldolase UstD with the focused rational iterative site-specific mutagenesis (FRISM) strategy to perform a C-C bond-forming reaction with dione electrophiles.
View Article and Find Full Text PDFA synthetic cyclic peptide for promoting antigen presentation and immune activation.
NPJ Vaccines
January 2025
School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia.
Cyclic peptides are often used as scaffolds for the multivalent presentation of drug molecules due to their structural stability and constrained conformation. We identified a cyclic deca-peptide incorporating lipoamino acids for delivering T helper and B cell epitopes against group A Streptococcus (GAS), eliciting robust humoral immune responses. In this study, we assessed the function-immunogenicity relationship of the multi-component vaccine candidate (referred to as VC-13) to elucidate a mechanism of action.
View Article and Find Full Text PDFMyristoylated Eepd1 Enhances Lipolysis and Thermogenesis through PKA Activation to Combat Obesity.
Nat Commun
January 2025
Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Middle-aged obesity, characterized by excessive fat accumulation and systemic energy imbalance, often precedes various health complications. Recent research has unveiled a surprising link between DNA damage response and energy metabolism. Here, we explore the role of Eepd1, a DNA repair enzyme, in regulating adipose tissue function and obesity onset.
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