Morphogen Gradient from a Noisy Source

Details Morphogen Gradient from a Noisy Source Morphogen Gradient from a Noisy Source

2005-02-24

arxiv.org/abs/q-bio/0502036v1

PRL 94, 078101 (2005)

Biology

Quantitative Biology

Tissues and Organs

Four pages, three figures

Scientific paper

10.1103/PhysRevLett.94.078101

We investigate the effect of time-dependent noise on the shape of a morphogen gradient in a developing embryo. Perturbation theory is used to calculate the deviations from deterministic behavior in a simple reaction-diffusion model of robust gradient formation, and the results are confirmed by numerical simulation. It is shown that such deviations can disrupt robustness for sufficiently high noise levels, and the implications of these findings for more complex models of gradient-shaping pathways are discussed.

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