Volume 52, Issue 49 pp. 13012-13015
Communication

Selective Exo-Enzymatic Labeling of N-Glycans on the Surface of Living Cells by Recombinant ST6Gal I

Dr. Ngalle Eric Mbua

Dr. Ngalle Eric Mbua

Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA)

Department of Chemistry, University of Georgia (USA)

These authors contributed equally to this work.

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Dr. Xiuru Li

Dr. Xiuru Li

Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA)

These authors contributed equally to this work.

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Dr. Heather R. Flanagan-Steet

Dr. Heather R. Flanagan-Steet

Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA)

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Dr. Lu Meng

Dr. Lu Meng

Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA)

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Dr. Kazuhiro Aoki

Dr. Kazuhiro Aoki

Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA)

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Prof. Dr. Kelley W. Moremen

Prof. Dr. Kelley W. Moremen

Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA)

Department of Biochemistry and Molecular Biology, University of Georgia (USA)

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Dr. Margreet A. Wolfert

Dr. Margreet A. Wolfert

Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA)

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Prof. Dr. Richard Steet

Corresponding Author

Prof. Dr. Richard Steet

Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA)

Department of Biochemistry and Molecular Biology, University of Georgia (USA)

Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA)===Search for more papers by this author
Prof. Dr. Geert-Jan Boons

Corresponding Author

Prof. Dr. Geert-Jan Boons

Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA)

Department of Chemistry, University of Georgia (USA)

Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602 (USA)===Search for more papers by this author
First published: 15 October 2013
Citations: 82

This research was supported by the National Cancer Institute (R01CA088986 to G.-J.B.), the National Center for Research Resources (P41RR005351 to G.-J.B. and K.W.M.) and the National Institute of General Medical Sciences (P41GM103390 to G.-J.B. and K.W.M.; R01GM086524 to R.S.; P41GM103490 to K.A.) from the US National Institutes of Health.

Graphical Abstract

A game of tag: N-Glycans on the surface of living cells were selectively tagged by exogenously administering recombinant ST6Gal I sialyltransferase and azide-modified CMP-Neu5Ac. This modification was followed by a strain-promoted cycloaddition using a biotin-modified dibenzylcyclooctynol (red star=biotin). The methodology will make it possible to dissect the mechanisms that underlie altered glycoconjugate recycling and storage in disease.

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