Results 61 to 70 of about 338,751 (320)

Self-replication and splitting of domain patterns in reaction-diffusion systems with fast inhibitor

, 1996
An asymptotic equation of motion for the pattern interface in the domain-forming reaction-diffusion systems is derived. The free boundary problem is reduced to the universal equation of non-local contour dynamics in two dimensions in the parameter region
A. Hagberg, A. Hagberg, B. S. Kerner, B. S. Kerner, B. S. Kerner, C. B. Muratov, C. B. Muratov, E. Ammelt, I. R. Epstein, J. D. Murray, K. Lee, K. M. Mayer, M. Cross, M. Seul, R. E. Goldstein, T. Ohta, T. Ohta, T. Ohta, T. Ohta, V. A. Vasiliev   +19 more
core   +1 more source

Modelling cell movement and chemotaxis pseudopod based feedback [PDF]

, 2011
A computational framework is presented for the simulation of eukaryotic cell migration and chemotaxis. An empirical pattern formation model, based on a system of non-linear reaction-diffusion equations, is approximated on an evolving cell boundary using ...
Insall, Robert H., Mackenzie, John, Neilson, Matthew Paterson, Webb, Steven   +3 more
core   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Synchronization in heterogeneous FitzHugh-Nagumo networks with hierarchical architecture

, 2016
We study synchronization in heterogeneous FitzHugh-Nagumo networks. It is well known that heterogeneities in the nodes hinder synchronization when becoming too large. Here, we develop a controller to counteract the impact of these heterogeneities.
Fradkov, A. L., Lehnert, J., Plotnikov, S. A., Schöll, E.   +3 more
core   +1 more source

Crosstalk between the ribosome quality control‐associated E3 ubiquitin ligases LTN1 and RNF10

FEBS Letters, EarlyView.
Loss of the E3 ligase LTN1, the ubiquitin‐like modifier UFM1, or the deubiquitinating enzyme UFSP2 disrupts endoplasmic reticulum–ribosome quality control (ER‐RQC), a pathway that removes stalled ribosomes and faulty proteins. This disruption may trigger a compensatory response to ER‐RQC defects, including increased expression of the E3 ligase RNF10 ...
Yuxi Huang, Satoshi Hashimoto, Sota Ito, Chisato Kikuguchi, Miho Hoshi, Kiyoshi Yamaguchi, Yoichi Furukawa, Toru Suzuki, Toshifumi Inada   +8 more
wiley   +1 more source

Propagation failure of excitation waves on trees and random networks

, 2014
Excitation waves are studied on trees and random networks of coupled active elements. Undamped propagation of such waves is observed in those networks. It represents an excursion from the resting state and a relaxation back to it for each node.
Isele, Thomas M., Kouvaris, Nikos E., Mikhailov, Alexander S., Schoell, Eckehard   +3 more
core   +1 more source

On a model mechanism for the spatial patterning of teeth primordia in the Alligator [PDF]

, 1996
We propose a model mechanism for the initiation and spatial positioning of teeth primordia in the alligator,Alligator mississippiensis. Detailed embryological studies by Westergaard & Ferguson (1986, 1987, 1990) show that jaw growth plays a crucial role ...
Cruywagen, G. C., Ferguson, M. W. J., Kulesa, P. M., Lubkin, S. R., Maini, P. K., Murray, J. D., Sneyd, J. S.   +6 more
core   +2 more sources

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

FEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Turing Patterning Using Gene Circuits with Gas-Induced Degradation of Quorum Sensing Molecules. [PDF]

PLoS ONE, 2016
The Turing instability was proposed more than six decades ago as a mechanism leading to spatial patterning, but it has yet to be exploited in a synthetic biology setting.
Bartłomiej Borek, Jeff Hasty, Lev Tsimring   +2 more
doaj   +1 more source

Feedback-dependent control of stochastic synchronization in coupled neural systems

, 2009
We investigate the synchronization dynamics of two coupled noise-driven FitzHugh-Nagumo systems, representing two neural populations. For certain choices of the noise intensities and coupling strength, we find cooperative stochastic dynamics such as ...
Dahlem, Markus A., Hövel, Philipp, Schöll, Eckehard, Shah, Sarang A.   +3 more
core   +1 more source