Ubiquitin and ubiquitin-modified proteins activate the Pseudomonas aeruginosa T3SS cytotoxin, ExoU.

Ubiquitin and ubiquitin-modified proteins activate the Pseudomonas aeruginosa T3SS cytotoxin, ExoU.
复制标题

DOI:
10.1111/j.1365-2958.2011.07904.x
复制
发表时间:
2011-12
影响因子:
3.6
通讯作者:
Frank DW
Frank DW
中科院分区:
生物学2区
文献类型:
--
作者:
Anderson DM;Schmalzer KM;Sato H;Casey M;Terhune SS;Haas AL;Feix JB;Frank DW

文献摘要

参考文献

被引文献

相似文献

铜绿假单胞菌是一种机会性革兰氏阴性病原体,具有III型分泌系统(T3 SS),对于逃避先天免疫和在受损患者中建立急性感染至关重要。我们的研究集中在ExoU的结构-活性关系上,ExoU是铜绿假单胞菌产生的最具毒性和破坏性的III型效应物。ExoU具有磷脂酶活性,其仅当真核辅因子与膜底物一起提供时才能在体外检测到。我们在这里报告,一个亚群的泛素化酵母SOD 1和其他泛素化的哺乳动物蛋白激活ExoU。使用各种链长和连接类型的纯化的泛素检测磷脂酶活性;然而,游离的单泛素在基因工程双重表达系统中是足够的。细菌酶作为激活剂使用泛素是前所未有的,代表了操纵真核泛素系统以促进细菌复制和传播的新方面。
Pseudomonas aeruginosa is an opportunistic Gram-negative pathogen that possesses a type III secretion system (T3SS) critical for evading innate immunity and establishing acute infections in compromised patients. Our research has focused on the structure-activity relationships of ExoU, the most toxic and destructive type III effector produced by P. aeruginosa. ExoU posseses phospholipase activity, which is detectable in vitro only when a eukaryotic cofactor is provided with membrane substrates. We report here that a subpopulation of ubiquitylated yeast SOD1 and other ubiquitylated mammalian proteins activate ExoU. Phospholipase activity was detected using purified ubiquitin of various chain lengths and linkage types; however, free monoubiquitin is sufficient in a genetically engineered dual expression system. The use of ubiquitin by a bacterial enzyme as an activator is unprecedented and represents a new aspect in the manipulation of the eukaryotic ubiquitin system to facilitate bacterial replication and dissemination.
DOI: 10.1371/journal.ppat.0030003
发表时间: 2007-01
期刊: PLOS PATHOGENS
影响因子: 6.7
作者:
Angot, Aurelie;Vergunst, Annette;Genin, Stephane;Peeters, Nemo
通讯作者: Peeters, Nemo
DOI: 10.1371/journal.ppat.1001128
发表时间: 2010-09-30
期刊: PLoS pathogens
影响因子: 6.7
作者:
Jubelin G;Taieb F;Duda DM;Hsu Y;Samba-Louaka A;Nobe R;Penary M;Watrin C;Nougayrède JP;Schulman BA;Stebbins CE;Oswald E
通讯作者: Oswald E
DOI: 10.1073/pnas.90.6.2320
发表时间: 1993-03-15
影响因子: 11.1
作者:
FU, H;COBURN, J;COLLIER, RJ
通讯作者: COLLIER, RJ
DOI: 10.1074/jbc.271.5.2823
发表时间: 1996-02-02
影响因子: 4.8
作者:
Baboshina, OV;Haas, AL
通讯作者: Haas, AL
DOI: 10.1111/j.1462-5822.2005.00670.x
发表时间: 2006-05-01
影响因子: 3.4
作者:
Haraga, A;Miller, SI
通讯作者: Miller, SI