The Product of arcR, the Sixth Gene of the arc Operon of Lactobacillus sakei, Is Essential for Expression of the Arginine Deiminase Pathway
Lactobacillus sakei is a lactic acid bacterium commonly used as a starter culture for dry sausage production and can utilize arginine via the arginine deiminase pathway. The arcABCTD cluster of L. sakei has been characterized, and transcriptional studies have shown that its expression is subject to carbon catabolite repression and induction by arginine. Downstream of arcD an additional gene has been found; this gene, arcR, codes for a putative regulatory protein of the Crp/Fnr family. Transcriptional studies have shown that arcR is coordinately transcribed with the remaining arc genes, and therefore, these genes constitute the arcABCTDR operon. Northern analysis also showed a complex pattern of transcripts, suggesting that processing and partial termination may play a role in regulation of the expression of individual genes of the operon. Inactivation of arcR led to arrest of transcription of the operon, indicating that the ArcR protein is essential for expression of the arc genes. The availability of this mutant made it possible to study whether the ability to utilize arginine affects the growth of L. sakei in meat fermentations. Under our experimental conditions, expression of arginine deiminase does not confer an obvious advantage to L. sakei, since the wild type and an arcR mutant strain displayed similar dynamics of growth.
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Format: | artículo biblioteca |
Language: | English |
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American Society for Microbiology
2002-12
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Subjects: | Carbon catabolite repression, Lactobacillus sakei, ArcR gene, |
Online Access: | http://hdl.handle.net/10261/3065 |
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dig-iata-es-10261-30652020-02-14T12:41:02Z The Product of arcR, the Sixth Gene of the arc Operon of Lactobacillus sakei, Is Essential for Expression of the Arginine Deiminase Pathway Zúñiga, Manuel Miralles, María del Carmen Pérez Martínez, Gaspar Carbon catabolite repression Lactobacillus sakei ArcR gene Lactobacillus sakei is a lactic acid bacterium commonly used as a starter culture for dry sausage production and can utilize arginine via the arginine deiminase pathway. The arcABCTD cluster of L. sakei has been characterized, and transcriptional studies have shown that its expression is subject to carbon catabolite repression and induction by arginine. Downstream of arcD an additional gene has been found; this gene, arcR, codes for a putative regulatory protein of the Crp/Fnr family. Transcriptional studies have shown that arcR is coordinately transcribed with the remaining arc genes, and therefore, these genes constitute the arcABCTDR operon. Northern analysis also showed a complex pattern of transcripts, suggesting that processing and partial termination may play a role in regulation of the expression of individual genes of the operon. Inactivation of arcR led to arrest of transcription of the operon, indicating that the ArcR protein is essential for expression of the arc genes. The availability of this mutant made it possible to study whether the ability to utilize arginine affects the growth of L. sakei in meat fermentations. Under our experimental conditions, expression of arginine deiminase does not confer an obvious advantage to L. sakei, since the wild type and an arcR mutant strain displayed similar dynamics of growth. Spanish Government (project ALI98-0714). M. Zúñiga was supported by a European Union Marie Curie return fellowship 2008-02-25T10:40:26Z 2008-02-25T10:40:26Z 2002-12 artículo http://purl.org/coar/resource_type/c_6501 Applied and Environmental Microbiology 68(12) : 6051-6058 (2002) http://hdl.handle.net/10261/3065 en none 1095320 bytes 2459 bytes application/pdf text/plain American Society for Microbiology |
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Carbon catabolite repression Lactobacillus sakei ArcR gene Carbon catabolite repression Lactobacillus sakei ArcR gene |
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Carbon catabolite repression Lactobacillus sakei ArcR gene Carbon catabolite repression Lactobacillus sakei ArcR gene Zúñiga, Manuel Miralles, María del Carmen Pérez Martínez, Gaspar The Product of arcR, the Sixth Gene of the arc Operon of Lactobacillus sakei, Is Essential for Expression of the Arginine Deiminase Pathway |
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Lactobacillus sakei is a lactic acid bacterium commonly used as a starter culture for dry sausage production and can utilize arginine via the arginine deiminase pathway. The arcABCTD cluster of L. sakei has been characterized, and transcriptional studies have shown that its expression is subject to carbon catabolite repression and induction by arginine. Downstream of arcD an additional gene has been found; this gene, arcR, codes for a putative regulatory protein of the Crp/Fnr family. Transcriptional studies have shown that arcR is coordinately transcribed with the remaining arc genes, and therefore, these genes constitute the arcABCTDR operon. Northern analysis also showed a complex pattern of transcripts, suggesting that processing and partial termination may play a role in regulation of the expression of individual genes of the operon. Inactivation of arcR led to arrest of transcription of the operon, indicating that the ArcR protein is essential for expression of the arc genes. The availability of this mutant made it possible to study whether the ability to utilize arginine affects the growth of L. sakei in meat fermentations. Under our experimental conditions, expression of arginine deiminase does not confer an obvious advantage to L. sakei, since the wild type and an arcR mutant strain displayed similar dynamics of growth. |
format |
artículo |
topic_facet |
Carbon catabolite repression Lactobacillus sakei ArcR gene |
author |
Zúñiga, Manuel Miralles, María del Carmen Pérez Martínez, Gaspar |
author_facet |
Zúñiga, Manuel Miralles, María del Carmen Pérez Martínez, Gaspar |
author_sort |
Zúñiga, Manuel |
title |
The Product of arcR, the Sixth Gene of the arc Operon of Lactobacillus sakei, Is Essential for Expression of the Arginine Deiminase Pathway |
title_short |
The Product of arcR, the Sixth Gene of the arc Operon of Lactobacillus sakei, Is Essential for Expression of the Arginine Deiminase Pathway |
title_full |
The Product of arcR, the Sixth Gene of the arc Operon of Lactobacillus sakei, Is Essential for Expression of the Arginine Deiminase Pathway |
title_fullStr |
The Product of arcR, the Sixth Gene of the arc Operon of Lactobacillus sakei, Is Essential for Expression of the Arginine Deiminase Pathway |
title_full_unstemmed |
The Product of arcR, the Sixth Gene of the arc Operon of Lactobacillus sakei, Is Essential for Expression of the Arginine Deiminase Pathway |
title_sort |
product of arcr, the sixth gene of the arc operon of lactobacillus sakei, is essential for expression of the arginine deiminase pathway |
publisher |
American Society for Microbiology |
publishDate |
2002-12 |
url |
http://hdl.handle.net/10261/3065 |
work_keys_str_mv |
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