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HDAC6-pack: cortactin acetylation joins the brew
G W Gant Luxton1, Gregg G Gundersen
1Department of Anatomy, Columbia University, New York, NY 10032, USA.
Developmental Cell
|August 8, 2007
Summary
Reversible acetylation, a key regulatory process, modifies proteins like histones and transcription factors. A new study identifies the actin-binding protein cortactin as a novel target of this important posttranslational modification.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Reversible acetylation of lysine residues is a crucial posttranslational modification.
- This modification regulates key cellular proteins including histones, transcription factors, chaperones, and microtubules.
Purpose of the Study:
- To identify novel targets of reversible acetylation.
- To investigate the role of acetylation in the regulation of actin-binding proteins.
Main Methods:
- Proteomic analysis to identify acetylated proteins.
- Biochemical assays to confirm acetylation sites.
- Cellular experiments to assess the functional impact of acetylation.
Main Results:
- Cortactin, an actin-binding protein, was identified as a new target of reversible acetylation.
- Specific lysine residues on cortactin were found to be acetylated.
- Acetylation of cortactin influences its function and cellular localization.
Conclusions:
- Cortactin is subject to dynamic regulation by reversible acetylation.
- This acetylation modifies cortactin's role in actin dynamics and cellular processes.
- The findings expand the understanding of posttranslational modifications in regulating cytoskeletal proteins.
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