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Updated: Aug 12, 2026

A Convenient and General Expression Platform for the Production of Secreted Proteins from Human Cells
Published on: July 31, 2012
Secretion of mammalian polypeptides from yeast
B L Carter1, S Doel, A R Goodey
1GD Searle & Company Ltd. High Wycombe, Buckinghamshire, UK.
Yeast cells can produce and secrete foreign proteins. While these proteins undergo glycosylation in yeast, the specific sugar structures differ from those in mammals.
Area of Science:
- Biotechnology
- Molecular Biology
- Cellular Biology
Background:
- Yeast is a common host for recombinant protein production.
- Understanding protein modification in yeast is crucial for biopharmaceutical development.
Purpose of the Study:
- To investigate the glycosylation of foreign polypeptides secreted by yeast.
- To compare yeast-mediated glycosylation with mammalian glycosylation.
Main Methods:
- Expression of foreign polypeptides in yeast.
- Analysis of secreted glycoproteins using biochemical techniques.
Main Results:
- Yeast cells successfully expressed and secreted foreign polypeptides.
- Mammalian glycoproteins secreted from yeast were glycosylated.
- The oligosaccharide structures on yeast-secreted glycoproteins were not identical to mammalian originals.
Conclusions:
- Yeast is a viable system for producing and secreting foreign glycoproteins.
- Yeast glycosylation machinery modifies secreted proteins but does not fully replicate mammalian patterns.
- Further engineering of yeast glycosylation pathways may be needed for precise mammalian glycoform production.
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