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Updated: Jun 22, 2025

Targeting Cysteine Thiols for in Vitro Site-specific Glycosylation of Recombinant Proteins
Published on: October 4, 2017
The chemical language of protein glycation
Meghan S Martin1, Jeremiah W Jacob-Dolan1, Vo Tri Tin Pham1
1Department of Chemistry, Tufts University, Medford, MA, USA.
Abstract:
Glycation is a non-enzymatic post-translational modification (PTM) that is correlated with many diseases, including diabetes, cancer and age-related disorders. Although recent work points to the importance of glycation as a functional PTM, it remains an open question whether glycation has a causal role in cellular signaling and/or disease development. In this Review, we contextualize glycation as a specific mechanism of carbon stress and consolidate what is known about advanced glycation end-product (AGE) structures and mechanisms. We highlight the current understanding of glycation as a PTM, focusing on mechanisms for installing, removing or recognizing AGEs. Finally, we discuss challenges that have hampered a more complete understanding of the biological consequences of glycation. The development of tools for predicting, modulating, mimicking or capturing glycation will be essential for interpreting a post-translational glycation network. Therefore, continued insights into the chemistry of glycation will be necessary to advance understanding of glycation biology.
Insights
Glycation, a non-enzymatic modification, is linked to diseases. This review explores its role in cellular signaling and disease, defining it as carbon stress and discussing advanced glycation end-products (AGEs).
Area of Science:
- Biochemistry
- Molecular Biology
- Cellular Biology
Background:
- Glycation is a non-enzymatic post-translational modification (PTM) linked to diabetes, cancer, and aging.
- Its functional role as a PTM and causal involvement in disease and signaling remain under investigation.
Purpose of the Study:
- To contextualize glycation as a mechanism of carbon stress.
- To consolidate knowledge on advanced glycation end-product (AGE) structures and mechanisms.
- To review the current understanding of glycation as a PTM, including AGE formation, removal, and recognition.
Main Methods:
- Literature review and synthesis of existing research on glycation.
- Analysis of AGE structures, formation, and biological roles.
- Discussion of challenges in understanding glycation's biological consequences.
Main Results:
- Glycation is presented as a form of carbon stress with implications for disease.
- Current knowledge on AGEs, their formation, and recognition pathways is summarized.
- Challenges hindering a full understanding of glycation's biological impact are identified.
Conclusions:
- Understanding glycation requires further insights into its chemistry and the development of new tools.
- Predicting, modulating, mimicking, or capturing glycation is crucial for deciphering the glycation network.
- Advancing glycation biology necessitates continued research into its chemical and biological mechanisms.
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