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Cited by 366

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Use of hydrazine to release in intact and unreduced form both N- and O-linked oligosaccharides from glycoproteins

Patel, Thakor, Bruce, James, Merry, Anthony, Bigge, Colette, Wormald, Mark, Parekh, Raj, Jaques, Alan·1993·Biochemistry

Abstract

The use of hydrazine to release unreduced N- and O-linked oligosaccharides from glycoproteins has been investigated using several "standard" glycoproteins of previously defined glycosylation. It is shown that hydrazinolysis can be used to release intact N- and O-linked oligosaccharides in an unreduced form. The release of O-linked oligosaccharides occurs with a lower temperature dependence than the release of N-linked oligosaccharides, and the kinetic parameters governing release of oligosaccharides from these standard glycoproteins have been determined. These parameters allow a definition of reaction conditions under which anhydrous hydrazinolysis can be used to selectively release O-linked oligosaccharides (60 degrees C, 5 h) or release both N- and O-linked oligosaccharides (95 degrees C, 4 h) in high yield (> 85%) from all glycoproteins investigated (n = 11). Under these reaction conditions, the recovered N- and O-linked oligosaccharides are structurally intact (as judged by 600-MHz 1H-NMR, laser-desorption mass spectrometry, HPAEC-PAD, gel filtration, and glycosidase digestion), with the possible exception of certain N- and O-acyl substituents of sialic acid. This use of mild hydrazinolysis therefore allows both the simultaneous and sequential chemical release from glycoproteins of O- and N-linked oligosaccharides in their intact unreduced form.

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Metadata

Authors
Patel, T., Bruce, J., Merry, A., Bigge, C., Wormald, M., Parekh, R., & Jaques, A.
Venue
Biochemistry
Published
1993-01-19
Volume
32
Issue
2
Pages
679-693
ISSN
  • 0006-2960 (ISSN-L)
  • 1520-4995
OpenAlex
W2096294692
Cited by
366
References
17
FWCI
4.75
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Use of hydrazine to release in intact and unreduced form both N- and O-linked oligosaccharides from glycoproteins. https://app.cochat.ai/papers/10.1021/bi00053a037
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Patel, T., Bruce, J., Merry, A., Bigge, C., Wormald, M., Parekh, R., & Jaques, A. (1993). Use of hydrazine to release in intact and unreduced form both N- and O-linked oligosaccharides from glycoproteins. Biochemistry. https://doi.org/10.1021/bi00053a037

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