Genomic analysis of 38 Legionella species identifies large and diverse effector repertoires.
Genomic analysis of 38 Legionella species identifies large and diverse effector repertoires.
复制标题
DOI:
10.1038/ng.3481
复制
发表时间:
2016-02
期刊:
影响因子:
30.8
通讯作者:
Segal, Gil
中科院分区:
文献类型:
--
作者:
Burstein, David;Amaro, Francisco;Zusman, Tal;Lifshitz, Ziv;Cohen, Ofir;Gilbert, Jack A.;Pupko, Tal;Shuman, Howard A.;Segal, Gil
Infection by the human pathogen Legionella pneumophila relies on the translocation of ~300 virulence proteins, termed effectors, which manipulate host-cell processes. However, almost no information exists regarding effectors in other Legionella pathogens. Here we sequenced, assembled and characterized the genomes of 38 Legionella species, and predicted their effector repertoire using a previously validated machine-learning approach. This analysis revealed a treasure trove of 5,885 predicted effectors. The effector repertoire of different Legionella species was found to be largely non-overlapping, and only seven core-effectors were shared among all species studied. Species-specific effectors had atypically low GC content, suggesting exogenous acquisition, possibly from their natural protozoan hosts. Furthermore, we detected numerous novel conserved effector domains, and discovered new domain combinations, which allowed inferring yet undescribed effector functions. The effector collection and network of domain architectures described here can serve as a roadmap for future studies of effector function and evolution.
登录
查看更多内容
影响因子:
6.7
作者:
Carey KL;Newton HJ;Lührmann A;Roy CR
通讯作者:
Roy CR
影响因子:
6.4
作者:
Beare PA;Gilk SD;Larson CL;Hill J;Stead CM;Omsland A;Cockrell DC;Howe D;Voth DE;Heinzen RA
通讯作者:
Heinzen RA
影响因子:
4.1
作者:
Kaneko, T;Nakamura, Y;Tabata, S
通讯作者:
Tabata, S
DOI:
10.1073/pnas.1511389112
发表时间:
2015-09-15
影响因子:
11.1
作者:
Isaac, Dervla T.;Laguna, Rita K.;Isberg, Ralph R.
通讯作者:
Isberg, Ralph R.
DOI:
10.1002/prot.340170405
发表时间:
1993-12-01
期刊:
PROTEINS-STRUCTURE FUNCTION AND GENETICS
影响因子:
--
作者:
BORK, P
通讯作者:
BORK, P