N-terminal acetylation inhibits protein targeting to the endoplasmic reticulum
2011
Understanding Protein N-Terminal Acetylation
publication
Evidence: moderate
Author Information
Author(s): Thomas Arnesen
Primary Institution: University of Bergen
Hypothesis
Does N-terminal acetylation inhibit protein targeting to the endoplasmic reticulum?
Conclusion
N-terminal acetylation plays a significant role in regulating protein stability and may prevent proteins from being targeted to the secretory pathway.
Supporting Evidence
- N-terminal acetylation is a major modification of eukaryotic proteins.
- Recent data suggest that N-terminal acetylation can act as a degradation signal.
- N-terminal acetylation may prevent protein targeting to the secretory pathway.
- Proteins with acetylated N-termini were found to be more stable in vivo.
- Nt-acetylation is essential for the functioning of actin filaments.
- N-terminal acetylation affects the targeting of GTPases to the Golgi membrane.
- Certain residues at position 2 can inhibit translocation when acetylated.
Takeaway
N-terminal acetylation is like a special tag on proteins that can decide if they get sent to work in the cell or stay in the cytosol.
Methodology
The study involved in silico analyses and functional studies to explore the effects of N-terminal acetylation on protein translocation.
Limitations
The study primarily focuses on yeast proteins, which may not fully represent the behavior of proteins in higher eukaryotes.
Digital Object Identifier (DOI)
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