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Mimicking the Function of Signaling Proteins: Toward Artificial Signal Transduction Therapy
Published on: September 29, 2016
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The structure-function relationship of a signaling-competent, dimeric Reelin fragment
Liam S Turk1, Xuyuan Kuang2, Valentina Dal Pozzo3
1Child Health Institute of New Jersey, New Brunswick, NJ 08901, USA; Department of Neuroscience and Cell Biology, Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA; School of Biological Sciences, Victoria University of Wellington, Wellington 6012, New Zealand.
Structure (London, England : 1993)
|June 5, 2021
Summary
Reelin
Area of Science:
- Neuroscience
- Molecular Biology
- Structural Biology
Background:
- Reelin signaling is crucial for brain development and function, operating via canonical and non-canonical pathways.
- The dimeric central fragment (CF) of Reelin is essential for activating the canonical pathway through lipoprotein receptors.
Purpose of the Study:
- To investigate the signaling properties of Reelin fragments.
- To determine the binding affinities of monomeric and dimeric Reelin CF to lipoprotein receptors.
- To elucidate the structural basis of canonical Reelin signal activation.
Main Methods:
- Analysis of Reelin fragment signaling properties.
- Measurement of differential binding affinities to lipoprotein receptors.
- Cryoelectron tomography to solve the dimeric structure of Reelin CF.
- Biophysical techniques for structural support.
Main Results:
- Reelin CF forms a flexible, covalent parallel dimer.
- The dimeric conformation of Reelin CF enables binding to lipoprotein receptors.
- Monomeric Reelin CF exhibits different binding characteristics and signaling capabilities.
Conclusions:
- The dimeric structure of Reelin CF is critical for its interaction with lipoprotein receptors.
- This specific conformation facilitates the activation of the canonical Reelin signaling pathway.
- Understanding Reelin's structural dynamics provides insights into brain development and function.
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