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07:44
An Electrochemiluminescence-Based Assay for MeCP2 Protein Variants
Published on: May 22, 2020
Intrinsic disorder and autonomous domain function in the multifunctional nuclear protein, MeCP2
Valerie H Adams1, Steven J McBryant, Paul A Wade
1Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado 80523, USA.
The Journal of Biological Chemistry
|March 21, 2007
Summary
Methyl CpG-binding protein 2 (MeCP2) is largely unstructured, featuring distinct domains. This disorder influences its DNA binding and chromatin condensation functions, crucial for its biological roles.
Area of Science:
- Molecular Biology
- Biochemistry
- Structural Biology
Background:
- Methyl CpG-binding protein 2 (MeCP2) is critical for gene regulation.
- Understanding MeCP2's structure is key to elucidating its function.
Purpose of the Study:
- To investigate the tertiary structure and domain organization of MeCP2.
- To characterize the structural properties of the MeCP2 e2 isoform.
Main Methods:
- Analytical ultracentrifugation
- Circular Dichroism (CD)
- Protease digestion
- FoldIndex algorithm for disorder prediction
Main Results:
- MeCP2 exists as a monomer across various conditions.
- MeCP2 is approximately 60% unstructured, influencing its DNA recognition and chromatin condensation.
- Protease digestion revealed at least six distinct domains, including the methyl DNA binding and transcriptional repression domains.
- Individual domains showed nonspecific DNA binding capabilities.
Conclusions:
- MeCP2's extensive intrinsic disorder shapes its tertiary structure and functional properties.
- The structural characteristics of MeCP2 provide insights into its multifunctionality.
- This study offers a model for characterizing other disordered proteins.
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