Circadian clock model based on protein sequestration (simple version) (Kim & Forger 2012)

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Accession:145800
"… To understand the biochemical mechanisms of this timekeeping, we have developed a detailed mathematical model of the mammalian circadian clock. Our model can accurately predict diverse experimental data including the phenotypes of mutations or knockdown of clock genes as well as the time courses and relative expression of clock transcripts and proteins. Using this model, we show how a universal motif of circadian timekeeping, where repressors tightly bind activators rather than directly binding to DNA, can generate oscillations when activators and repressors are in stoichiometric balance. …"
Reference:
1 . Kim JK, Forger DB (2012) A mechanism for robust circadian timekeeping via stoichiometric balance Molecular Systems Biology 8:630:1-14 [PubMed]
Model Information (Click on a link to find other models with that property)
Model Type: Molecular Network;
Brain Region(s)/Organism:
Cell Type(s): Suprachiasmatic nucleus (SCN) neuron;
Channel(s):
Gap Junctions:
Receptor(s):
Gene(s):
Transmitter(s):
Simulation Environment: C or C++ program; XPP; MATLAB; Mathematica; SBML;
Model Concept(s): Oscillations; Simplified Models; Circadian Rhythms;
Implementer(s): Kim, Jae Kyoung [kimjack0 at kaist.ac.kr];
This is a simple mathematical model of intracellularcircadian clock developed in the paper  

Jae Kyoung Kim and Daniel B. Forger (2012) "A mechanism for robust circadian timekeeping via balanced stoichiometry", Molecular Systems Biology


SNF: Single negative feedback loop.
NNF: Negative feedback loop with additional negative feedback loop. 
PNF: Negative feedback loop with additional positive feedback loop. 

The model is available in the format of 

1) XPPAUT: *.ode
2) Matlab: *.m
3) Mathematica: *.nb
4) SBML: *.xml




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