media archive
Physics Conferences The 3rd East Asia Joint Seminar on Statistical Physics
Loading the player ...
[C1] Energy dissipation in an adaptive molecular circuit
SPEAKER  |  Shouwen Wang
INSTITUTE  |  Beijing Computational Research Center
DATE  |  October 14(Wed), 2015
TIME  |  14:00
PLACE  |  Rm 1503(Bldg#I,5th), Korea Institute for Advanced Study, South Korea
Keyword  |  
Download  |  
ABSTRACT  |  The ability to monitor nutrient and other environmental conditions with high sensitivity is crucial for cell growth and survival. Sensory adaptation allows a cell to recover its sensitivity after a transient response to a shift in the strength of extracellular stimulus. The working principles of adaptation have been established previously based on rate equations which do not consider fluctuations in a thermal environment. Recently, Lan et al (2012 Nat. Phys. 8 422?8) performed a detailed analysis of a stochastic model for the Escherichia coli sensory network. They showed that accurate adaptation is possible only when the system operates in a nonequilibrium steady-state (NESS). They further proposed an energy-speed-accuracy (ESA) trade-off relation. We present here analytic results on the NESS of the model through a mapping to a one- dimensional birth-death process. An exact expression for the entropy production rate is also derived. Based on these results, we are able to discuss the ESA relation in a more general setting. Our study suggests that the adaptation error can be reduced exponentially as the methylation range increases. Finally, we show that a nonequilibrium phase transition exists in the infinite methylation range limit, despite the fact that the model contains only two discrete variables.
  • Non-equilibrium stea...
    Pik-Yin Lai
    October 17(Sat), 2015
  • Tracer dynamics in E...
    Xinliang Xu
    October 17(Sat), 2015
  • Positive Feedback an...
    Chi-Keung Chan
    October 17(Sat), 2015
  • Potts Antiferromagne...
    Youjin Deng
    October 17(Sat), 2015
  • On the efficiency of...
    Jae Dong Noh
    October 17(Sat), 2015
  • Geometry-controlled ...
    Jae-Hyung Jeon
    October 16(Fri), 2015
  • Divergence of viscos...
    Hisao Hayakawa
    October 16(Fri), 2015
  • The kicked rotor: fr...
    Chushun Tian
    October 16(Fri), 2015
  • Structural origin of...
    Limei Xu
    October 16(Fri), 2015
  • Replica symmetry bre...
    Shin-ichi Sasa
    October 16(Fri), 2015
  • Cell fate determinat...
    Chao Tang
    October 15(Thu), 2015
  • Shapes of a looped e...
    Hirofumi Wada
    October 15(Thu), 2015
  • [C3] Hydrodynamic mo...
    Hsuan-Yi Chen
    October 15(Thu), 2015
  • Thermodynamic glass ...
    Atsushi Ikeda
    October 15(Thu), 2015
  • Rheology and fluctua...
    Daisuke Mizuno
    October 15(Thu), 2015
  • A model of adaptive ...
    Takaaki Aoki
    October 15(Thu), 2015
  • Network of likes and...
    Beom Jun Kim
    October 15(Thu), 2015
  • [C4] Finding Lagrang...
    Sang Hoon Lee
    October 15(Thu), 2015
  • Quantum annealing an...
    Hidetoshi Nishimori
    October 14(Wed), 2015
  • Fluctuations of entr...
    Yung-Fu Chen
    October 14(Wed), 2015
  • [C1] Energy dissipat...
    Shouwen Wang
    October 14(Wed), 2015
  • None-Equilibrium Ste...
    Hai-Jun Zhou
    October 14(Wed), 2015
  • Sequential pattern f...
    Lei-Han Tang
    October 14(Wed), 2015
  • How Volatilities Non...
    Bo Zheng
    October 14(Wed), 2015
  • Total cost of operat...
    Jaegon Um
    October 14(Wed), 2015
  • Generalized Microcan...
    Hyungwon Kim
    October 14(Wed), 2015
  • Detailed Balance Bre...
    Joonhyun Yeo
    October 14(Wed), 2015