Effects of NatB Deletion on Protein Phosphorylation in Yeast
Author Information
Author(s): Helbig Andreas O, Rosati Sara, Pijnappel Pim WWM, van Breukelen Bas, Timmers Marc HTH, Mohammed Shabaz, Slijper Monique, Heck Albert JR
Primary Institution: Utrecht University
Hypothesis
What are the effects of NatB deletion on protein phosphorylation levels in yeast?
Conclusion
The deletion of NatB leads to elevated protein phosphorylation levels in yeast.
Supporting Evidence
- 59 NatB substrates were identified, expanding the known list significantly.
- Protein phosphorylation levels increased by over 3-fold in the NatB knockout strain.
- Network analysis indicated that the kinase Snf1p plays a key role in the observed phosphorylation changes.
Takeaway
When a specific protein is missing in yeast, it causes other proteins to be more active, which changes how they work together.
Methodology
Quantitative proteomics using metabolic 15N isotope labeling to identify NatB substrates and analyze protein phosphorylation.
Potential Biases
Potential bias in substrate identification due to the specificity of the proteomics approach.
Limitations
The study primarily focuses on a single yeast strain and may not generalize to other organisms.
Participant Demographics
Yeast strains used were wildtype and NatB knockout strains.
Statistical Information
P-Value
0.004
Confidence Interval
95%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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