Evidence for a Plasmid-Linked Restriction-Modification System in Lactobacillus helveticus
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چکیده
منابع مشابه
Lactobacillus helveticus: the proteolytic system
Lactobacillus helveticus is one of the species of lactic acid bacteria (LAB) most commonly used in the production of fermented milk beverages and some types of hard cheese. The versatile nature of this bacterium is based on its highly efficient proteolytic system consisting of cell-envelope proteinases (CEPs), transport system and intracellular peptidases. Besides use of L. helveticus in cheese...
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Potential mobility of restriction-modification systems has been suggested by evolutionary/bioinformatic analysis of prokaryotic genomes. Here we demonstrate in vivo movement of a restriction-modification system within a genome under a laboratory condition. After blocking replication of a temperature-sensitive plasmid carrying a PaeR7I restriction-modification system in Escherichia coli cells, t...
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SUMMARY Plasmid R124 was first described in 1972 as being a new member of incompatibility group IncFIV, yet early physical investigations of plasmid DNA showed that this type of classification was more complex than first imagined. Throughout the history of the study of this plasmid, there have been many unexpected observations. Therefore, in this review, we describe the history of our understan...
متن کاملrorn Lactobacillus helveticus
2 Department of Food Science, University of Wisconsi nMad ison, WI 53706, USA A prolinase (pepR) gene was cloned from an industrial Lactobacillus helveticus strain (53/7). Three clones, hybridizing with a gene probe specific for a peptidase shown to have activity against diand tripeptides, were detected from a L. helveticus genomic library constructed in Escherichia coli. None of the three clon...
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Diversity of thermophilic bacteria in milk assessed by culturing, PCR-DGGE, and 1 pyrosequencing 2 3 Elena Fernández 1 , Caio T. C. C. Rachid 2 , Tomasz Rychlik 1 , Ángel Alegría 1 , Raquel S. 4 Peixoto 2 , Susana Delgado 1 , and Baltasar Mayo 1 * 5 6 Departamento de Microbiología y Bioquímica, Instituto de Productos Lácteos de 7 Asturias (IPLA-CSIC), Paseo Río Linares s/n, 33300-Villaviciosa, ...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1990
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.56.11.3412-3419.1990