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Review
. 2017 Oct 16:8:2000.
doi: 10.3389/fmicb.2017.02000. eCollection 2017.

Molecular Basis of Stationary Phase Survival and Applications

Jananee Jaishankar  1 , Preeti Srivastava  1
Affiliations
Review

Molecular Basis of Stationary Phase Survival and Applications

Jananee Jaishankar et al. Front Microbiol. .

Abstract

Stationary phase is the stage when growth ceases but cells remain metabolically active. Several physical and molecular changes take place during this stage that makes them interesting to explore. The characteristic proteins synthesized in the stationary phase are indispensable as they confer viability to the bacteria. Detailed knowledge of these proteins and the genes synthesizing them is required to understand the survival in such nutrient deprived conditions. The promoters, which drive the expression of these genes, are called stationary phase promoters. These promoters exhibit increased activity in the stationary phase and less or no activity in the exponential phase. The vectors constructed based on these promoters are ideal for large-scale protein production due to the absence of any external inducers. A number of recombinant protein production systems have been developed using these promoters. This review describes the stationary phase survival of bacteria, the promoters involved, their importance, regulation, and applications.

Keywords: plasmid vectors; sigma factor; stationary phase; stationary phase gene expression; stationary phase promoters.

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Figures

FIGURE 1
FIGURE 1
Comparison of molecular and cellular changes in exponential vs stationary phase.
FIGURE 2
FIGURE 2
Various bacterial adaptations at stationary and long-term stationary phase. Abbreviations are described in the text.
FIGURE 3
FIGURE 3
Categories of genes transcribed in stationary phase.
FIGURE 4
FIGURE 4
Sequence alignment of (A) Gram-positive and (B) Gram-negative stationary phase promoters. –10 and –35 are underlined and shown in red and green, respectively. The conserved bases are shown below.
FIGURE 5
FIGURE 5
Applications of stationary phase gene expression systems.
See this image and copyright information in PMC

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