Publikation:

Differential Diffusivity of Nodal and Lefty Underlies a Reaction-Diffusion Patterning System

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2012

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Rogers, Katherine W.
Jordan, Ben M.
Lee, Joon S.
Robson, Drew
Ramanathan, Sharad
Schier, Alexander F.

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Science. American Association for the Advancement of Science (AAAS). 2012, 336(6082), pp. 721-724. ISSN 0036-8075. eISSN 1095-9203. Available under: doi: 10.1126/science.1221920

Zusammenfassung

Biological systems involving short-range activators and long-range inhibitors can generate complex patterns. Reaction-diffusion models postulate that differences in signaling range are caused by differential diffusivity of inhibitor and activator. Other models suggest that differential clearance underlies different signaling ranges. To test these models, we measured the biophysical properties of the Nodal/Lefty activator/inhibitor system during zebrafish embryogenesis. Analysis of Nodal and Lefty gradients revealed that Nodals have a shorter range than Lefty proteins. Pulse-labeling analysis indicated that Nodals and Leftys have similar clearance kinetics, whereas fluorescence recovery assays revealed that Leftys have a higher effective diffusion coefficient than Nodals. These results indicate that differential diffusivity is the major determinant of the differences in Nodal/Lefty range and provide biophysical support for reaction-diffusion models of activator/inhibitor-mediated patterning.

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570 Biowissenschaften, Biologie

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ISO 690MÜLLER, Patrick, Katherine W. ROGERS, Ben M. JORDAN, Joon S. LEE, Drew ROBSON, Sharad RAMANATHAN, Alexander F. SCHIER, 2012. Differential Diffusivity of Nodal and Lefty Underlies a Reaction-Diffusion Patterning System. In: Science. American Association for the Advancement of Science (AAAS). 2012, 336(6082), pp. 721-724. ISSN 0036-8075. eISSN 1095-9203. Available under: doi: 10.1126/science.1221920
BibTex
@article{Muller2012-05-11Diffe-55952,
  year={2012},
  doi={10.1126/science.1221920},
  title={Differential Diffusivity of Nodal and Lefty Underlies a Reaction-Diffusion Patterning System},
  number={6082},
  volume={336},
  issn={0036-8075},
  journal={Science},
  pages={721--724},
  author={Müller, Patrick and Rogers, Katherine W. and Jordan, Ben M. and Lee, Joon S. and Robson, Drew and Ramanathan, Sharad and Schier, Alexander F.}
}
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