A mathematical model is developed to jointly analyze elastic and inelastic scattering data of fluctuating membranes within a single theoretical framework. The model builds on a nonhomogeneously clipped time-dependent Gaussian random field. This specific approach provides one with general analytical expressions for the intermediate scattering function for any number of sublayers in the membrane and arbitrary contrasts. The model is illustrated with the analysis of small-angle x-ray and neutron scattering as well as with neutron spin-echo data measured on unilamellar vesicles prepared from phospholipids extracted from porcine brain tissues. The parameters fitted on the entire data set are the lengths of the chain and the head of the molecules that make up the membrane, the amplitude and lateral sizes of the bending deformations, the thickness fluctuation, and a single parameter characterizing the dynamics.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevE.110.034608 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Potential global distributions of an important aphid pest, Rhopalosiphum padi: insights from ensemble models with multiple variables.
J Econ Entomol
January 2025
College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, Henan 466001, China.
Species distribution modeling is extensively used for predicting potential distributions of invasive species. However, an ensemble modeling approach has been less frequently used particularly pest species. The bird cherry-oat aphid Rhopalosiphum padi L.
View Article and Find Full Text PDFLand carbon sink function variation across bedrock types in Southwest China.
J Environ Manage
January 2025
Nanjing Institute of Environmental Sciences (NIES), Ministry of Ecology and Environment (MEE), Nanjing, 210042, China.
Terrestrial ecosystem carbon sinks are a natural deposit that absorbs carbon from the atmosphere. A stable land carbon sink facilitates more reliable predictions of carbon sequestration under changing climate conditions. In contrast, a highly variable land carbon sink will introduce significant uncertainty into model predictions.
View Article and Find Full Text PDFVPT: Video portraits transformer for realistic talking face generation.
Neural Netw
January 2025
School of Automation Science and Engineering, South China University of Technology, China. Electronic address:
Talking face generation is a promising approach within various domains, such as digital assistants, video editing, and virtual video conferences. Previous works with audio-driven talking faces focused primarily on the synchronization between audio and video. However, existing methods still have certain limitations in synthesizing photo-realistic video with high identity preservation, audiovisual synchronization, and facial details like blink movements.
View Article and Find Full Text PDFThe nonlinear association between lipoprotein(a) and major adverse cardiovascular events in acute coronary syndrome patients with three-vessel disease.
Sci Rep
January 2025
Department of Cardiology, Taian 88 Hospital, China RongTong Medical Healthcare Group Co.Ltd, Taian, 271000, China.
Lipoprotein(a) [Lp(a)] is a lipoprotein with potent atherogenic and thrombogenic potential. Its role in patients with acute coronary syndrome (ACS) combined with three-vessel disease (TVD) remains unclear. This study aimed to investigate the correlation between Lp(a) levels and the occurrence of major adverse cardiovascular events (MACE) in patients with ACS combined with TVD.
View Article and Find Full Text PDFCryo-EM structure of an activated GPR4-Gs signaling complex.
Nat Commun
January 2025
Shanghai Frontiers Science Center of Genome Editing and Cell Therapy, Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China.
Article Synopsis
- G protein-coupled receptor 4 (GPR4) is part of a group called proton-sensing GPCRs that respond to pH changes and regulate various physiological functions, with its overactivation noted in acidic tumor environments.
- Researchers used cryo-electron microscopy to determine the 3D structures of zebrafish GPR4 at different pH levels, revealing important histidine and acidic residues that affect its proton-sensing ability, alongside key triad residues.
- The study also identified a cluster of aromatic residues in GPR4's orthosteric pocket that may play a crucial role in transferring signals to the inside of the cell, laying the groundwork for further research on psGPCRs.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!