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Calreticulin: roles in cell-surface protein expression
Yue Jiang1, Sandeepa Dey2, Hiroaki Matsunami3
1Department of Molecular Genetics and Microbiology, University Program of Genetics and Genomics, Duke University Medical Center, Durham, NC 27710, USA. yj31@duke.edu.
Membranes
|September 18, 2014
Summary
Calreticulin, a protein chaperone, can hinder the cell surface expression of receptors and channels. Reducing calreticulin levels boosts the surface presence and function of these crucial cell proteins.
Area of Science:
- Cell Biology
- Molecular Biology
- Protein Biochemistry
Background:
- Proteins need precise locations within cells to function.
- Cell-surface proteins like receptors and channels must reach the cell membrane to signal.
- Calreticulin is a chaperone protein involved in protein folding, maturation, and trafficking.
Purpose of the Study:
- To review the role of calreticulin.
- To focus on calreticulin's negative regulation of cell-surface protein expression.
Main Methods:
- Literature review of existing studies on calreticulin and cell-surface proteins.
Main Results:
- Calreticulin negatively regulates the surface expression of certain receptors and channels.
- Depletion of calreticulin enhances the cell-surface expression and function of these proteins.
Conclusions:
- Calreticulin plays a significant role in controlling the abundance of cell-surface proteins.
- Understanding calreticulin's inhibitory function is key to modulating cell-surface protein activity.
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