Rapid evolution of protein kinase PKR alters sensitivity to viral inhibitors.
Rapid evolution of protein kinase PKR alters sensitivity to viral inhibitors.
复制标题
DOI:
10.1038/nsmb.1529
复制
发表时间:
2009-01
影响因子:
16.8
通讯作者:
中科院分区:
文献类型:
--
作者:
Protein kinase PKR is activated during viral infection and phosphorylates the α subunit of eukaryotic translation initiation factor 2 (eIF2), leading to inhibition of translation and viral replication. We report fast evolution of the PKR kinase domain in vertebrates, coupled with positive selection of specific sites. Substitution of positively selected residues in human PKR with residues found in related species altered sensitivity to PKR inhibitors from different poxviruses. Species-specific differences in sensitivity to poxviral pseudosubstrate inhibitors were identified between human and mouse PKR, which were traced to positively-selected residues near the eIF2α-binding site. Our findings indicate how an antiviral protein evolved to evade viral inhibition while maintaining its primary function. Moreover, the identified species-specific differences in the susceptibility to viral inhibitors have important implications for studying human infections in non-human model systems.
登录
查看更多内容
影响因子:
64.5
作者:
Dey, M;Cao, C;Dever, TE
通讯作者:
Dever, TE
影响因子:
3.9
作者:
Berglund, AC;Wallner, B;Liberles, DA
通讯作者:
Liberles, DA
影响因子:
10.7
作者:
Castresana, J
通讯作者:
Castresana, J
DOI:
10.1038/nrmicro1099
发表时间:
2005-03
期刊:
Nature reviews. Microbiology
影响因子:
--
作者:
通讯作者:
--
DOI:
10.1073/pnas.89.11.4825
发表时间:
1992-06-01
影响因子:
11.1
作者:
CHANG, HW;WATSON, JC;JACOBS, BL
通讯作者:
JACOBS, BL