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Interaction Analysis between Cationic Lipid and Oligonucleotide with a Lipid Membrane-Immobilized Monolith Silica Column: A High-Performance Liquid Chromatography Approach.
Langmuir
January 2025
Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan.
Understanding the interactions between lipid membranes and nucleotide drugs is crucial for nucleic acid therapy. Although several methods have been employed to evaluate nucleotide-lipid membrane interactions, these interactions can be complex; this complexity arises from how external factors, such as ionic strength or temperature, influence the lipid membrane's overall properties. In this study, we prepared a lipid membrane-immobilized monolithic silica (LMiMS) column for high-performance liquid chromatography (HPLC) analysis to understand interactions between the lipid membrane and nucleic acid.
View Article and Find Full Text PDFBreathing Transition and Effective Iodine Adsorption in a Temperature-Responsive Zn-Based Flexible Metal-Organic Framework.
Langmuir
January 2025
Department of Applied Chemistry, Aligarh Muslim University, Aligarh, 202002, India.
A porous and flexible Zn-MOF was synthesized under solvothermal conditions by using the ligand 2,5-furandicarboxylic acid (2,5-FDA). This flexible Zn-MOF demonstrates a temperature-triggered breathing effect. At low temperature (100 K), we obtained the high-symmetry MOF denoted as with a unit cell volume of 1958 Å, characterized by triangular narrow pore (np) channels.
View Article and Find Full Text PDFLow-temperature on-site in situ high-pressure ultrafast pump-probe spectroscopy instrument.
Rev Sci Instrum
January 2025
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
We design and construct an ultrafast optical spectroscopy instrument that integrates both on-site in situ high-pressure technique and low-temperature tuning capability. Conventional related instruments rely on off-site tuning and calibration of the high pressure. Recently, we have developed an on-site in situ technique, which has the advantage of removing repositioning fluctuation.
View Article and Find Full Text PDFThe influence of temperature induced changes in the composition of MFGM on membrane phase transition and nanomechanical properties.
Food Res Int
January 2025
State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, Jiangxi 330047, China; Inner Mongolia Yili Industrial Group Co., Ltd, Hohhot, China. Electronic address:
Biomimetic membrane was investigated as model systems to mimic the structure of milk fat globule membrane (MFGM) and to study the effects of thermal processing-induced changes in MFGM fractions on membrane morphology and physical properties. Molecular docking was utilized to screen xanthine oxidase (XO) as the MFGM protein most likely to bind to phospholipid molecules on MFGM. Fluorescence spectroscopy verified that XO formed stable complexes with DOPE, DPPC, and PS 18:0-18:1, with the strongest binding to DOPE.
View Article and Find Full Text PDFTemperature Induced Unfolding and Compaction of Cytochrome in the Same Aqueous Solutions.
J Am Chem Soc
January 2025
Department of Chemistry, University of California, Berkeley, California 94720-1460, United States.
Most conventional methods used to measure protein melting temperatures reflect changes in structure between different conformational states and are typically fit to a two-state model. Population abundances of distinct conformations were measured using variable-temperature electrospray ionization ion mobility mass spectrometry to investigate the thermally induced unfolding of the model protein cytochrome . Nineteen conformers formed at high temperature have elongated structures, consistent with unfolded forms of this protein.
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