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Updated: Mar 14, 2026

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Published on: March 11, 2022
Understanding protein glycosylation pathways in bacteria
Hong Li1,2, Aleksandra W Debowski2,3, Tingting Liao2
1West China Marshall Research Centre for Infectious Diseases, Centre of Infectious Diseases, West China Hospital of Sichuan University, Chengdu 610041, China.
Bacterial protein glycosylation pathways are increasingly reported due to analytical advances. This review details lipid carrier-mediated and cytoplasmic stepwise glycosylation, plus glycoengineering applications.
Area of Science:
- Microbiology
- Biochemistry
- Glycobiology
Background:
- Advances in analytical methods have increased the detection and structural determination of glycoproteins in bacteria.
- Protein glycosylation, a crucial post-translational modification, is now recognized as prevalent in prokaryotes.
Purpose of the Study:
- To review the known pathways for bacterial protein glycosylation.
- To discuss the potential for glycoengineering recombinant glycoproteins using bacterial systems.
Main Methods:
- Literature review of bacterial protein glycosylation pathways.
- Analysis of lipid carrier-mediated 'en bloc' glycosylation.
- Examination of cytoplasmic stepwise protein glycosylation.
Main Results:
- Two primary pathways for bacterial protein glycosylation are identified: lipid carrier-mediated 'en bloc' and cytoplasmic stepwise.
- Bacterial protein glycosylation systems offer potential for glycoengineering.
Conclusions:
- Understanding bacterial protein glycosylation is essential for its exploitation.
- The 'mix and match' approach using conserved pathways in Gram-negative bacteria shows promise for producing engineered glycoproteins.
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