-. Single-spanning SARS-CoV-2 envelope (E) protein topology is a major determinant of protein quaternary structure and function. -. Charged residues distribution in E protein sequences from highly pathogenic human coronaviruses (, SARS-CoV, MERS-CoV and SARS-CoV-2) stabilize Nt-Ct membrane topology. -. E protein sequence could have evolved to ensure a more robust membrane topology from MERS-CoV to SARS-CoV and SARS-CoV-2.
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http://dx.doi.org/10.1016/j.bbamem.2021.183608 | DOI Listing |
Nat Commun
March 2025
Bio-Organic Chemistry, Department of Chemical Engineering and Chemistry, Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, Eindhoven, The Netherlands.
Polymersomes with surface-integrated nanoparticles, in which a smaller sphere is attached to a larger capsule, are typically formed through complex processes like membrane deformation, polymerization, or membrane functionalization. This complexity restricts facile application of this unusual topology, for example in drug delivery or nanomotor science. Our study introduces a robust method for crafting polymersomes with surface-integrated nanoparticles using a hierarchical phase separation approach.
View Article and Find Full Text PDFJ Chem Phys
March 2025
Department of Biological Science, Indian Institute of Science Education and Research (IISER), Kolkata, India.
Membrane protein folding in the viscous microenvironment of a lipid bilayer is an inherently slow process that challenges experiments and computational efforts alike. The folding kinetics is moreover associated with topological modulations of the biological milieu. Studying such structural changes in membrane-embedded proteins and understanding the associated topological signatures in membrane leaflets, therefore, remain relatively unexplored.
View Article and Find Full Text PDFActa Biomater
March 2025
School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou, 510182, China; School of Medicine and Dentistry & Institute for Biomedicine and Glycomics, Griffith University, Gold Coast, QLD 4222, Australia; The Australia-China Centre for Tissue Engineering and Regenerative Medicine (ACCTERM), Brisbane, QLD 4000, Australia. Electronic address:
Nanomaterial-mediated macrophage immune response plays a crucial role in bone regeneration microenvironment. Mesoporous silica nanoparticles are widely used as nano-drug carriers, imaging agents, and bioactivity regulators for potential tissue regeneration. It is known that surface topography features of nanomaterials play an important regulatory role in immune response.
View Article and Find Full Text PDFACS Omega
March 2025
Department of Biosciences and Technology, School of Science and Environmental Studies, Dr. Vishwanath Karad MIT-World Peace University, Kothrud, Pune, Maharashtra 411038, India.
Defense peptides are part of plants' innate immune system and show widespread occurrence across the plant kingdom. Most of them belong to the category of antimicrobial peptides (AMPs) and act as strong chemical weapons against the biotic stresses that plants encounter. Plant AMP families exhibit remarkably conserved topology, being cysteine-rich with a conserved number of disulfide bridges stabilizing their three-dimensional structure, cationic in nature, and having hydrophobic surfaces.
View Article and Find Full Text PDFNeurochem Res
March 2025
CNC-UC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.
NMDA receptors for the neurotransmitter glutamate are widely distributed in the central nervous system, playing important roles in brain development, function and plasticity. Alterations in their activity are also important mediators in neuropsychiatric and neurodegenerative disorders. The different NMDA receptor subunits (GluN1, GluN2A-D and GluN3A, B) share a similar structure and membrane topology, with an intracellular C-terminus tail responsible for the interaction with proteins important for the trafficking of the receptors, and to control their surface distribution and signalling activity.
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