Results 1 to 10 of about 1,531 (25)

Revising Berg-Purcell for finite receptor kinetics [PDF]

, 2021
From nutrient uptake, to chemoreception, to synaptic transmission, many systems in cell biology depend on molecules diffusing and binding to membrane receptors. Mathematical analysis of such systems often neglects the fact that receptors process molecules at finite kinetic rates.
arxiv   +1 more source

Direct imaging of lateral movements of AMPA receptors inside synapses [PDF]

EMBO J 22, 18 (15/09/2003) 4656-65, 2007
Trafficking of AMPA receptors in and out of synapses is crucial for synaptic plasticity. Previous studies have focused on the role of endo/exocytosis processes or that of lateral diffusion of extra-synaptic receptors. We have now directly imaged AMPAR movements inside and outside synapses of live neurons using single-molecule fluorescence microscopy ...
arxiv   +1 more source

Large number of receptors may reduce cellular response time variation [PDF]

Physical biology 10 (3), 035008, 2013, 2012
Cells often have tens of thousands of receptors, even though only a few activated receptors can trigger full cellular responses. Reasons for the overabundance of receptors remain unclear. We suggest that, in certain conditions, the large number of receptors results in a competition among receptors to be the first to activate the cell.
arxiv   +1 more source

Plasticity of hydrogen bond networks regulates mechanochemistry of cell adhesion complexes [PDF]

, 2014
Mechanical forces acting on cell adhesion receptor proteins regulate a range of cellular functions by formation and rupture of non-covalent interactions with ligands. Typically, force decreases the lifetimes of intact complexes (slip-bonds), making the discovery that these lifetimes can also be prolonged ("catch-bonds"), a surprise.
arxiv   +1 more source

Algebraic study of receptor-ligand systems: a dose-response analysis [PDF]

arXiv, 2022
The study of a receptor-ligand system generally relies on the analysis of its dose-response (or concentration-effect) curve, which quantifies the relation between ligand concentration and the biological effect (or cellular response) induced when binding its specific cell surface receptor.
arxiv  

Method for identification of condition-associated public antigen receptor sequences [PDF]

eLife 2018;7:e33050, 2017
Diverse repertoires of hypervariable immunoglobulin receptors (TCR and BCR) recognize antigens in the adaptive immune system. The development of immunoglobulin receptor repertoire sequencing methods makes it possible to perform repertoire-wide disease association studies of antigen receptor sequences.
arxiv   +1 more source

Regulation of Neuromodulator Receptor Efficacy - Implications for Whole-Neuron and Synaptic Plasticity [PDF]

Progress in Neurobiology 72(6), pp 399-415, April 2004, 2004
Membrane receptors for neuromodulators (NM) are highly regulated in their distribution and efficacy - a phenomenon which influences the individual cell's response to central signals of NM release. Even though NM receptor regulation is implicated in the pharmacological action of many drugs, and is also known to be influenced by various environmental ...
arxiv   +1 more source

MD simulations and experiments of plasma proteins adsorption to the biodegradable magnesium alloys to facilitate cell response [PDF]

arXiv, 2022
Once the magnesium alloy was implanted in the body, it was immediately covered with plasma proteins. The coated alloy surface promoted the adsorption and growth of osteoblasts. Herein, in vitro biological reactions of the ZK60 and AZ31 magnesium alloys were analyzed with and without plasma proteins incubation.
arxiv  

Increased accuracy of ligand sensing by receptor diffusion on cell surface [PDF]

Physical Review E 82, 041902 (2010), 2010
The physical limit with which a cell senses external ligand concentration corresponds to the perfect absorber, where all ligand particles are absorbed and overcounting of same ligand particles does not occur. Here we analyze how the lateral diffusion of receptors on the cell membrane affects the accuracy of sensing ligand concentration.
arxiv   +1 more source

The impact of high density receptor clusters on VEGF signaling [PDF]

EPTCS 125, 2013, pp. 37-52, 2013
Vascular endothelial growth factor (VEGF) signaling is involved in the process of blood vessel development and maintenance. Signaling is initiated by binding of the bivalent VEGF ligand to the membrane-bound receptors (VEGFR), which in turn stimulates receptor dimerization.
arxiv   +1 more source