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PERMutation Using Transposase Engineering (PERMUTE): A Simple Approach for Constructing Circularly Permuted Protein

Alicia M Jones¹, Joshua T Atkinson², Jonathan J Silberg³

¹Biosciences Department, Rice University, MS-140, 6100 Main Street, Houston, TX, 77005, USA.

Methods in Molecular Biology (Clifton, N.J.)

|October 7, 2016

Summary

This summary is machine-generated.

This study details a method for creating diverse circularly permuted protein libraries using transposase mutagenesis and specialized DNA elements called permuteposons. This technique enables the exploration of protein folding and function by altering protein sequences.

Keywords:

Circular permutation Library Protein engineering Transposase Transposon

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Area of Science:

Protein engineering and molecular biology.
Biochemistry and structural biology.

Background:

Protein sequence order is crucial for function, and rearrangements like circular permutation are valuable research tools.
Traditional methods for generating protein variants can be complex and time-consuming.

Purpose of the Study:

To present a straightforward protocol for constructing combinatorial libraries of circularly permuted proteins.
To introduce transposase mutagenesis as an efficient method for protein sequence rearrangement.
To describe the utility of engineered DNA elements (permuteposons) in this process.

Main Methods:

Utilizing transposase mutagenesis to randomly insert synthetic transposons (permuteposons) into circularized genes.
Generating vectors that express various circularly permuted protein variants.
Developing and describing different permuteposon designs for library construction.

Main Results:

Demonstration of transposase mutagenesis as a viable method for generating diverse circularly permuted protein libraries.
Successful construction of libraries encoding different permuted protein variants.
Characterization of various permuteposons facilitating library generation.

Conclusions:

Transposase mutagenesis offers a simple and effective approach for creating libraries of circularly permuted proteins.
The described protocol and permuteposons streamline the study of protein folding, activity, and molecular switch development.
This method expands the toolkit for protein engineering and functional studies.