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[资源] 2011最新《Nature》20110721全文PDF版


The type VI secretion system (T6SS) is a protein-export machine that is present in about one-quarter of all sequenced bacteria. Bacteria can use this system to deliver toxic effector proteins in a contact-dependent manner to other bacterial cells. However, what these proteins do once their destination is reached has remained largely unknown. It is now shown that the opportunistic human pathogen Pseudomonas aeruginosa uses its T6SS to kill competing Gram-negative bacteria by injecting them with two peptidoglycan-degradative enzymes, the effector proteins Tse1 and Tse3. P. aeruginosa protects itself from these effectors by expressing immunity proteins that bind the toxins. A clash between bacteria is depicted on the cover. T6SS effector proteins transferred from a donor (red) to a recipient cell (green) degrade the cell wall, resulting in a breach in the peptidoglycan layer of the recipient. The outer membrane of the duelling Gram-negative bacteria is not shown, so that the underlying peptidoglycan layer is visible. Cover graphic: Jaime Easter.
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引用回帖:
Originally posted by flyingsnow4 at 2011-07-23 09:22:17:
thx for sharing

沙发被八戒抢啦
5楼2011-07-23 09:24:54
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shecf

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引用回帖:
Originally posted by ljason at 2011-07-23 09:18:28:

给BB,一会
3楼2011-07-23 09:19:14
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flyingsnow4

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thx for sharing
4楼2011-07-23 09:22:17
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徐得全10楼
2011-07-24 08:27   回复  
五星好评  顶一下,感谢分享!
heflylife13楼
2011-07-24 09:21   回复  
三星好评  顶一下,感谢分享!
jlmeng14楼
2011-07-24 09:25   回复  
五星好评  顶一下,感谢分享!
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