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  Intradomain Allosteric Network Modulates Calcium Affinity of the C-Type Lectin Receptor Langerin

Hanske, J., Aleksić, S., Ballaschk, M., Jurk, M., Shanina, E., Beerbaum, M., et al. (2016). Intradomain Allosteric Network Modulates Calcium Affinity of the C-Type Lectin Receptor Langerin. Journal of the American Chemical Society, 138(37), 12176-12186. doi:10.1021/jacs.6b05458.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-45BD-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0000-D5A5-5
Genre: Journal Article

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 Creators:
Hanske, Jonas1, Author              
Aleksić, Stevan, Author
Ballaschk, Martin, Author
Jurk, Marcel, Author
Shanina, Elena1, Author              
Beerbaum, Monika, Author
Schmieder, Peter, Author
Keller, Bettina G., Author
Rademacher, Christoph1, Author              
Affiliations:
1Christoph Rademacher, Biomolekulare Systeme, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863300              

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 Abstract: Antigen uptake and processing by innate immune cells is crucial to initiate the immune response. Therein, the endocytic C-type lectin receptors recognize pathogens by their glycan structures enabling decision-making in innate immunity. Herein, we studied the carbohydrate recognition domain of Langerin, a C-type lectin receptor involved in the host defense against viruses such as HIV and influenza as well as bacteria and fungi. Using a combination of nuclear magnetic resonance and molecular dynamics simulations, we unraveled the molecular determinants underlying cargo capture and release encoded in the receptor architecture. Our findings revealed receptor dynamics over several timescale associated with binding and release of the essential cofactor Ca2+ controlled by the coupled motions of two loops. Moreover, mutual information theory and site-directed mutagenesis exposed an allosteric intra-domain network that modulates the Ca2+ affinity depending on the pH thereby promoting fast ligand release.

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 Dates: 2016-08-252016-09-21
 Publication Status: Published in print
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 Identifiers: DOI: 10.1021/jacs.6b05458
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Title: Journal of the American Chemical Society
  Other : J. Am. Chem. Soc.
  Abbreviation : JACS
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 138 (37) Sequence Number: - Start / End Page: 12176 - 12186 Identifier: ISSN: 0002-7863