Related Experiment Video
Updated: May 17, 2026
10:57
Growth-based Determination and Biochemical Confirmation of Genetic Requirements for Protein Degradation in Saccharomyces cerevisiae
Published on: February 16, 2015
Identification of She3 as an SCF(Grr1) substrate in budding yeast
1Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut, United States of America.
Plos One
|November 13, 2012
Summary
The Skp1-cullin-F-box (SCF) complex targets proteins for degradation. Researchers found that degrading the She3 protein by SCF(Grr1) is crucial for optimal cell growth, though not for mRNA transport.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- The cell cycle requires precise protein degradation.
- Skp1-cullin-F-box (SCF) complexes are key ubiquitin ligases.
- SCF(Grr1) degrades cell cycle regulators and metabolic enzymes.
Purpose of the Study:
- Identify novel substrates of the SCF(Grr1) complex.
- Investigate the role of She3 degradation in cellular processes.
- Determine the impact of She3 stabilization on cell growth.
Main Methods:
- Yeast two-hybrid assay to identify protein interactions.
- Generation of stabilized She3 mutants.
- Co-culture assays to assess cell growth rates.
Main Results:
- She3 was identified as a novel substrate of Grr1.
- She3 degradation is not essential for asymmetric mRNA transport.
- Stabilized She3 mutants exhibited slower cell growth.
Conclusions:
- SCF(Grr1)-mediated degradation of She3 is vital for optimal cell proliferation.
- She3 degradation plays a role in regulating cell growth, independent of mRNA transport.
- This study reveals a new function for SCF(Grr1) in cell cycle regulation.
