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Title: Genetic and genomic analysis of RNases in model cyanobacteria

Abstract

Cyanobacteria are diverse photosynthetic microbes with the ability to convert CO2 into useful products. However, metabolic engineering of cyanobacteria remains challenging because of the limited resources for modifying the expression of endogenous and exogenous biochemical pathways. Fine-tuned control of protein production will be critical to optimize the biological conversion of CO2 into desirable molecules. Messenger RNA (mRNA) are labile intermediates that play critical roles in determining the translation rate and steady state protein concentrations in the cell. The majority of studies on mRNA turnover have focused on the model heterotrophic bacteria Escherichia coli and Bacillus subtilis. These studies have elucidated many RNA modifying and processing enzymes and have highlighted the differences between these Gram-negative and Gram-positive bacteria, respectively. In contrast, much less is known about mRNA turnover in cyanobacteria. We generated a compendium of the major ribonucleases (RNases) and provide an in-depth analysis of RNase III-like enzymes in commonly studied and diverse cyanobacteria. Furthermore, using targeted gene deletion, we genetically dissected the RNases in Synechococcus sp. PCC 7002, one of the fastest growing and industrially attractive cyanobacterial strains. We found that all three cyanobacterial homologs of RNase III and a member of the RNase II/R family are not essential undermore » standard laboratory conditions, while homologs of RNase E/G, RNase J1/J2, PNPase, and a different member of the RNase II/R family appear to be essential for growth. In conclusion, this work will enhance our understanding of native control of gene expression and will facilitate the development of an RNA-based toolkit for metabolic engineering in cyanobacteria.« less

Authors:
 [1];  [1];  [1]
  1. Univ. of Wisconsin-Madison, Madison, WI (United States)
Publication Date:
Research Org.:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1466792
Grant/Contract Number:  
SC0010329
Resource Type:
Accepted Manuscript
Journal Name:
Photosynthesis Research
Additional Journal Information:
Journal Volume: 126; Journal Issue: 1; Journal ID: ISSN 0166-8595
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; mRNA; RNA; Ribonuclease; photosynthesis; cyanobacteria; synthetic biology; biofuels; comparative genomics

Citation Formats

Cameron, Jeffrey C., Gordon, Gina C., and Pfleger, Brian F. Genetic and genomic analysis of RNases in model cyanobacteria. United States: N. p., 2015. Web. doi:10.1007/s11120-015-0076-2.
Cameron, Jeffrey C., Gordon, Gina C., & Pfleger, Brian F. Genetic and genomic analysis of RNases in model cyanobacteria. United States. https://doi.org/10.1007/s11120-015-0076-2
Cameron, Jeffrey C., Gordon, Gina C., and Pfleger, Brian F. Sat . "Genetic and genomic analysis of RNases in model cyanobacteria". United States. https://doi.org/10.1007/s11120-015-0076-2. https://www.osti.gov/servlets/purl/1466792.
@article{osti_1466792,
title = {Genetic and genomic analysis of RNases in model cyanobacteria},
author = {Cameron, Jeffrey C. and Gordon, Gina C. and Pfleger, Brian F.},
abstractNote = {Cyanobacteria are diverse photosynthetic microbes with the ability to convert CO2 into useful products. However, metabolic engineering of cyanobacteria remains challenging because of the limited resources for modifying the expression of endogenous and exogenous biochemical pathways. Fine-tuned control of protein production will be critical to optimize the biological conversion of CO2 into desirable molecules. Messenger RNA (mRNA) are labile intermediates that play critical roles in determining the translation rate and steady state protein concentrations in the cell. The majority of studies on mRNA turnover have focused on the model heterotrophic bacteria Escherichia coli and Bacillus subtilis. These studies have elucidated many RNA modifying and processing enzymes and have highlighted the differences between these Gram-negative and Gram-positive bacteria, respectively. In contrast, much less is known about mRNA turnover in cyanobacteria. We generated a compendium of the major ribonucleases (RNases) and provide an in-depth analysis of RNase III-like enzymes in commonly studied and diverse cyanobacteria. Furthermore, using targeted gene deletion, we genetically dissected the RNases in Synechococcus sp. PCC 7002, one of the fastest growing and industrially attractive cyanobacterial strains. We found that all three cyanobacterial homologs of RNase III and a member of the RNase II/R family are not essential under standard laboratory conditions, while homologs of RNase E/G, RNase J1/J2, PNPase, and a different member of the RNase II/R family appear to be essential for growth. In conclusion, this work will enhance our understanding of native control of gene expression and will facilitate the development of an RNA-based toolkit for metabolic engineering in cyanobacteria.},
doi = {10.1007/s11120-015-0076-2},
journal = {Photosynthesis Research},
number = 1,
volume = 126,
place = {United States},
year = {Sat Jan 17 00:00:00 EST 2015},
month = {Sat Jan 17 00:00:00 EST 2015}
}

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Works referencing / citing this record:

Inactivation of the RNA helicase CrhR impacts a specific subset of the transcriptome in the cyanobacterium Synechocystis sp. PCC 6803
journal, October 2018


Magnesium Deficiency Induced Global Transcriptome Change in Citrus sinensis Leaves Revealed by RNA-Seq
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Distinct and redundant functions of three homologs of RNase III in the cyanobacterium Synechococcus sp. strain PCC 7002
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Distinct and redundant functions of three homologs of RNase III in the cyanobacterium Synechococcus sp. strain PCC 7002
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