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GlycoMob: an ion mobility-mass spectrometry collision cross section database for glycomics

MPG-Autoren
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Pagel,  Kevin
Free University Chemistry, Institute of Chemistry and Biochemistry;
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Zitation

Struwe, W. B., Pagel, K., Benesch, J. L. P., Harvey, D. J., & Campbell, M. P. (2016). GlycoMob: an ion mobility-mass spectrometry collision cross section database for glycomics. Glycoconjugate Journal, 33(3), 399-404. doi:10.1007/s10719-015-9613-7.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0028-4E4F-E
Zusammenfassung
Ion mobility mass spectrometry (IM-MS) is a promising analytical technique for glycomics that separates glycan ions based on their collision cross section (CCS) and provides glycan precursor and fragment masses. It has been shown that isomeric oligosaccharide species can be separated by IM and identified on basis of their CCS and fragmentation. These results indicate that adding CCSs information for glycans and glycan fragments to searchable databases and analysis pipelines will increase identification confidence and accuracy. We have developed a freely accessible database, GlycoMob (http://​www.​glycomob.​org), containing over 900 CCSs values of glycans, oligosaccharide standards and their fragments that will be continually updated. We have measured the absolute CCSs of calibration standards, biologically derived and synthetic N-glycans ionized with various adducts in positive and negative mode or as protonated (positive ion) and deprotonated (negative ion) ions.