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Bacterial pathogens have developed a variety of strategies to induce their own internalization into mammalian cells which are normally nonphagocytic. The Gram-positive bacterium Listeria monocytogenes enters into many cultured cell types using two bacterial surface proteins, InlA (internalin) and InlB. In both cases, entry takes place after engagement of a receptor and induction of a series of signaling events. 相似文献
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V. E. Terekhova N. A. Aizdaicher A. A. Karpenko L. S. Buzoleva G. P. Somov 《Microbiology》2006,75(1):73-76
Relationships between marine diatoms and the bacterium Listeria monocytogenes have been studied by routine algological methods and high-resolution video-enhanced differential interference contrast light microscopy. The study showed that the relationship between the listeria and the benthic diatom Navicula sp. has a parasitic character, whereas the relationship between the listeria and the planktonic diatom Phaeodactylum tricornutum is protocooperative. 相似文献
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Relationships between marine diatoms and the bacterium Listeria monocytogenes have been studied by routine algological methods and high-resolution video-enhanced differential interference contrast light microscopy. The study showed that the relationship between the listeria and the benthic diatom Navicula sp. has a parasitic character, whereas the relationship between the listeria and the planktonic diatom Phaeodactylum tricornutum is protocooperative. 相似文献
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Buchrieser C 《Microbes and infection / Institut Pasteur》2007,9(10):1147-1155
This review describes the Listeria monocytogenes genome sequences available today and their comparison with that of Listeria innocua and Listeria welshimeri by highlighting their characteristic features and common traits. The diversity present among them is analysed with emphasis on putative virulence and host-pathogen interaction related functions. Then large-scale studies comparing gene content of Listeria and how these studies contributed to typing applications will be discussed. Finally, evolutionary conclusions and future perspectives in Listeria genomics are presented. 相似文献
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One hundred and twenty-two food, clinical, and veterinary strains of Listeria monocytogenes were examined for the presence of plasmids. Twenty-five (20%) contained plasmids, which varied from 1.3 to 66 MDa in size. Of 10 strains of other Listeria species (L. innocua, L. ivanovii, L. welshimeri, L. seeligeri, L. grayi, and L. murrayi) examined, seven (70%) contained plasmids, varying from 38 to 53 MDa. No strains with multiple plasmids were found. Plasmids of identical size were isolated from related strains in some, although not all, cases. The presence of a plasmid in a strain was not related to phenotypic characters of known extrachromosomal inheritance. 相似文献
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