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Rapid Synthesis and Screening of Chemically Activated Transcription Factors with GFP-based Reporters

Rapid Synthesis and Screening of Chemically Activated Transcription Factors with GFP-based Reporters

Published on: November 26, 2013

Global strain engineering by mutant transcription factors.

Amanda M Lanza¹, Hal S Alper

¹Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA.

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

|August 5, 2011

Summary

Global transcription machinery engineering (gTME) is a novel method to enhance cellular functions. This technique engineers transcription factors to improve metabolite production and cellular performance in various organisms.

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Area of Science:

Biotechnology
Synthetic Biology
Microbial Engineering

Background:

Cellular hosts are crucial for producing chemicals like pharmaceuticals and fuels.
Strain engineering aims to enhance host functionalities, including titer and bioreactor performance.
Traditional methods struggle with complex, multigenic phenotypes like tolerance and productivity.

Purpose of the Study:

Introduce global transcription machinery engineering (gTME) as a method for complex cellular phenotypes.
Demonstrate gTME's applicability in both prokaryotic and eukaryotic systems.
Highlight gTME's potential for improving strain performance.

Main Methods:

gTME involves screening dominant mutant alleles of transcription-related proteins.
Mutant libraries of transcription factors are created and screened.
The process utilizes directed evolution for iterative improvement.

Main Results:

gTME successfully reprogrammed cellular metabolism and regulation.
Applications led to improved environmental tolerances.
Enhanced metabolite production and substrate utilization were achieved.

Conclusions:

gTME is a versatile methodology for engineering complex cellular phenotypes.
The approach offers significant improvements over traditional strain engineering techniques.
gTME provides a powerful tool for optimizing microbial cell factories.