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Synthesis of an Intein-mediated Artificial Protein Hydrogel
Published on: January 27, 2014
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Design of a Split Intein with Exceptional Protein Splicing Activity
Adam J Stevens1, Zachary Z Brown1, Neel H Shah1
1Department of Chemistry, Princeton University , Frick Laboratory, Princeton, New Jersey 08544, United States.
Journal of the American Chemical Society
|February 9, 2016
Summary
Researchers engineered a robust split intein, Cfa, using a consensus design. This novel protein trans-splicing (PTS) system shows enhanced stability and activity, improving biotechnological applications.
Area of Science:
- Biochemistry
- Molecular Biology
- Biotechnology
Background:
- Protein trans-splicing (PTS) using split inteins is a key tool in chemical biology.
- Existing split intein systems have limitations in stability and activity.
Purpose of the Study:
- To engineer a novel split intein with superior stability and activity.
- To enhance protein trans-splicing (PTS) efficiency for biotechnological applications.
Main Methods:
- Comparative analysis of Npu and Ssp split inteins using batch mutagenesis.
- Consensus sequence design based on an alignment of 73 DnaE inteins.
- Characterization of the engineered Cfa split intein's splicing rate, stability, and expression.
Main Results:
- Identified key residues influencing splicing rates in the second shell of DnaE inteins.
- Developed the Cfa consensus split intein with rapid splicing and enhanced thermal/chaotropic stability.
- Demonstrated increased expression of N-terminal Cfa fusions in antibody heavy chains.
Conclusions:
- The Cfa split intein offers improved robustness and efficiency over existing PTS systems.
- Cfa provides a versatile platform for advancing protein chemistry and intein-based technologies.
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