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Hydrodynamic characterization of the FtsZ protein from Escherichia coli demonstrates the presence of linear and lateral trimers.
Anal Biochem
January 2025
Laboratorio de Biología Estructural y Molecular BEM, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425 Ñuñoa, Santiago, 7800003, Chile; Laboratorio de Biotecnología Vegetal y Ambiental Aplicada, Universidad Tecnológica Metropolitana, Santiago, Chile.
FtsZ is a bacterial protein that plays a crucial role in cytokinesis by forming the Z-ring. This ring acts as a scaffold to recruit other division proteins and guide the synthesis of septal peptidoglycan, which leads to cell constriction. In its native state, the FtsZ protein from Escherichia coli (EcFtsZ) is a multi-oligomer comprising dimers, trimers, tetramers, and hexamers in a dynamic self-association equilibrium depending on its concentration.
View Article and Find Full Text PDFPeptide BG From Bitter Gourd () Improves Adjuvant-Induced Arthritis by Modulating the Necroptosis/Neutrophil Extracellular Traps/Inflammation Axis and the Gut Microbiota.
Mediators Inflamm
December 2024
Clinical Medical Research Center, Inner Mongolia Bioactive Peptide Engineering Laboratory, The Affiliated Hospital, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China.
BG is a novel bioactive peptide derived from bitter gourd (), known for its anti-inflammatory and immunomodulatory properties. In the present study, our objective is to investigate the functional roles and mechanisms of BG in the context of rheumatoid arthritis (RA). A rat model of adjuvant-induced arthritis (AIA) was established by administering complete Freund's adjuvant (CFA).
View Article and Find Full Text PDFAmino acids modulate liquid-liquid phase separation in vitro and in vivo by regulating protein-protein interactions.
Proc Natl Acad Sci U S A
December 2024
Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland.
Liquid-liquid phase separation (LLPS) is an intracellular process widely used by cells for many key biological functions. It occurs in complex and crowded environments, where amino acids (AAs) are vital components. We have found that AAs render the net interaction between proteins more repulsive.
View Article and Find Full Text PDFHybrid particle-phase field model and renormalized surface tension in dilute suspensions of nanoparticles.
Phys Rev E
October 2024
School of Mathematics and Statistics, The Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom.
We present a two-phase field model and a hybrid particle-phase field model to simulate dilute colloidal sedimentation and flotation near a liquid-gas interface (or fluid-fluid interface in general). Both models are coupled to the incompressible Stokes equation, which is solved numerically using a combination of sine and regular Fourier transforms to account for the no-slip boundary conditions at the boundaries. The continuum two-phase field model allows us to analytically solve the equilibrium interfacial profile using a perturbative approach, demonstrating excellent agreement with numerical simulations.
View Article and Find Full Text PDFSelf-assembled micro-patterns in uphill-diffusion solution system.
Nanotechnology
October 2024
College of New Materials and New Energies, Shenzhen Technology University, 518118 Shenzhen, People's Republic of China.
In this work we present self-organized regular patterns in a solution system through uphill-diffusion. Micrometer thick organic semiconductor solution is sandwiched between a substrate and cover-plate. Self-assembled regular patterns can be observed on the substrate after solvent evaporation.
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