Title:An Overview of the Role of Membrane Proteins in Microbial Solvents
Tolerance
Volume: 30
Issue: 2
Author(s): Lei Ai, Fangwei Mei and Ren Peng*
Affiliation:
- College of Life Science, Jiangxi Normal University, Nanchang, 330022, China
Keywords:
Biocatalysis, biotransformation, Pseudomonas putida, DOT-T1E, solvent tolerance, microorganisms.
Abstract:
Background: Solvent tolerance is a desired feature of microorganisms for their application
in biotechnology. Organic solvent-tolerant microorganisms are able to thrive in the presence of
organic solvents. Several mechanisms have been proposed to elucidate their intrinsic tolerance to
organic solvents.
Objective: The present review aims to summarize the state of the art of the roles of membrane proteins
in microbial organic solvent tolerance. Strategies and challenges for improving the protective function
of membrane proteins in organic solvent stress are also proposed.
Results: Membrane proteins related to transporter, signal transduction, and material and energy
metabolism are involved in solvent tolerance. Optimization of the expression level of membrane
proteins and engineering of membrane proteins are utilized to tackle the toxicity caused by organic
solvents.
Conclusions: Membrane proteins occupy a strikingly important position in microbial solvent
tolerance. Further research on novel methods in membrane proteins, trade-offs among overexpression
and toxicity of membrane proteins and solvent yield, and a direct relationship between signaling
pathways and solvent tolerance will advance the utilization of organic solvent-tolerant
microorganisms in biotechnology.