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  Imaging single glycans

Wu, X., Delbianco, M., Anggara, K., Michnowicz, T., Pardo-Vargas, A., Bharate, P., et al. (2020). Imaging single glycans. Nature, 582(7812), 375-378. doi:10.1038/s41586-020-2362-1.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0006-9E10-6 Version Permalink: https://hdl.handle.net/21.11116/0000-0006-C72A-B
Genre: Journal Article

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 Creators:
Wu, X., Author
Delbianco, Martina1, Author           
Anggara, K., Author
Michnowicz, T., Author
Pardo-Vargas, Alonso2, Author           
Bharate, Priya3, Author           
Sen, S., Author
Pristl, M., Author
Rauschenbach, S., Author
Schlickum, U., Author
Abb, S., Author
Seeberger, Peter H.2, Author           
Kern, K., Author
Affiliations:
1Martina Delbianco, Biomolekulare Systeme, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2559692              
2Peter H. Seeberger - Automated Systems, Biomolekulare Systeme, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863306              
3Peter H. Seeberger - Nanoparticles and Colloidal Polymers, Biomolekulare Systeme, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863307              

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 Abstract: Imaging of biomolecules guides our understanding of their diverse structures and functions. Real-space imaging at sub-nanometre resolution using cryo-electron microscopy has provided key insights into proteins and their assemblies. Direct molecular imaging of glycans—the predominant biopolymers on Earth, with a plethora of structural and biological functions—has not been possible so far. The inherent glycan complexity and backbone flexibility require single-molecule approaches for real-space imaging. At present, glycan characterization often relies on a combination of mass spectrometry and nuclear magnetic resonance imaging to provide insights into size, sequence, branching and connectivity, and therefore requires structure reconstruction from indirect information. Here we show direct imaging of single glycan molecules that are isolated by mass-selective, soft-landing electrospray ion beam deposition and imaged by low-temperature scanning tunnelling microscopy. The sub-nanometre resolution of the technique enables the visualization of glycan connectivity and discrimination between regioisomers. Direct glycan imaging is an important step towards a better understanding of the structure of carbohydrates.

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Language(s): eng - English
 Dates: 2020-06-172020
 Publication Status: Issued
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 Identifiers: DOI: 10.1038/s41586-020-2362-1
DOI: 10.1038/s41586-020-2518-z
Other: Wu2020
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Title: Nature
  Abbreviation : Nature
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 582 (7812) Sequence Number: - Start / End Page: 375 - 378 Identifier: ISSN: 0028-0836