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The Escherichia coli GcvB sRNA Uses Genetic Redundancy to Control cycA Expression
The Escherichia coli sRNA GcvB regulates several genes involved in transport of amino acids and peptides (sstT, oppA, dppA, and cycA). Two regions of GcvB from nt +124 to +161 and from nt +73 to +82 are complementary with essentially the same region of the cycA mRNA. Transcriptional fusions of cycA...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Scholarly Research Network
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3658540/ https://www.ncbi.nlm.nih.gov/pubmed/23724327 http://dx.doi.org/10.5402/2012/636273 |
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author | Stauffer, Lorraine T. Stauffer, George V. |
author_facet | Stauffer, Lorraine T. Stauffer, George V. |
author_sort | Stauffer, Lorraine T. |
collection | PubMed |
description | The Escherichia coli sRNA GcvB regulates several genes involved in transport of amino acids and peptides (sstT, oppA, dppA, and cycA). Two regions of GcvB from nt +124 to +161 and from nt +73 to +82 are complementary with essentially the same region of the cycA mRNA. Transcriptional fusions of cycA to lacZ showed the region of cycA mRNA that can pair with either region of GcvB is necessary for regulation by GcvB. However, mutations in either region of gcvB predicted to disrupt pairing between cycA mRNA and GcvB did not alter expression of a cycA-lacZ translational fusion. A genetic analysis identified nts in GcvB necessary for regulation of the cycA-lacZ fusion. The results show that either region of GcvB complementary to cycA mRNA can basepair with and independently repress cycA-lacZ and both regions need to be changed to cause a significant loss of repression. |
format | Online Article Text |
id | pubmed-3658540 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | International Scholarly Research Network |
record_format | MEDLINE/PubMed |
spelling | pubmed-36585402013-05-30 The Escherichia coli GcvB sRNA Uses Genetic Redundancy to Control cycA Expression Stauffer, Lorraine T. Stauffer, George V. ISRN Microbiol Research Article The Escherichia coli sRNA GcvB regulates several genes involved in transport of amino acids and peptides (sstT, oppA, dppA, and cycA). Two regions of GcvB from nt +124 to +161 and from nt +73 to +82 are complementary with essentially the same region of the cycA mRNA. Transcriptional fusions of cycA to lacZ showed the region of cycA mRNA that can pair with either region of GcvB is necessary for regulation by GcvB. However, mutations in either region of gcvB predicted to disrupt pairing between cycA mRNA and GcvB did not alter expression of a cycA-lacZ translational fusion. A genetic analysis identified nts in GcvB necessary for regulation of the cycA-lacZ fusion. The results show that either region of GcvB complementary to cycA mRNA can basepair with and independently repress cycA-lacZ and both regions need to be changed to cause a significant loss of repression. International Scholarly Research Network 2012-05-28 /pmc/articles/PMC3658540/ /pubmed/23724327 http://dx.doi.org/10.5402/2012/636273 Text en Copyright © 2012 L. T. Stauffer and G. V. Stauffer. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Stauffer, Lorraine T. Stauffer, George V. The Escherichia coli GcvB sRNA Uses Genetic Redundancy to Control cycA Expression |
title | The Escherichia coli GcvB sRNA Uses Genetic Redundancy to Control cycA Expression |
title_full | The Escherichia coli GcvB sRNA Uses Genetic Redundancy to Control cycA Expression |
title_fullStr | The Escherichia coli GcvB sRNA Uses Genetic Redundancy to Control cycA Expression |
title_full_unstemmed | The Escherichia coli GcvB sRNA Uses Genetic Redundancy to Control cycA Expression |
title_short | The Escherichia coli GcvB sRNA Uses Genetic Redundancy to Control cycA Expression |
title_sort | escherichia coli gcvb srna uses genetic redundancy to control cyca expression |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3658540/ https://www.ncbi.nlm.nih.gov/pubmed/23724327 http://dx.doi.org/10.5402/2012/636273 |
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