Insights into interferon regulatory factor activation from the crystal structure of dimeric IRF5.
Insights into interferon regulatory factor activation from the crystal structure of dimeric IRF5.
复制标题
DOI:
10.1038/nsmb.1496
复制
发表时间:
2008-11
影响因子:
16.8
通讯作者:
中科院分区:
文献类型:
--
作者:
Interferon regulatory factors (IRFs) are essential in the innate immune response and other physiological processes. Activation of these proteins in the cytoplasm is triggered by phosphorylation of Ser/Thr residues in a C-terminal autoinhibitory region, which stimulates dimerization, transport into the nucleus, assembly with the coactivator CBP/p300 and initiation of transcription. The novel crystal structure of the transactivation domain of pseudophosphorylated human IRF5 reveals a striking dimer in which the bulk of intersubunit interactions involve a highly extended C-terminal region. The corresponding region has previously been shown to block CBP/p300 binding to unphosphorylated IRF3. Mutation of key interface residues supports the observed dimer as the physiologically activated state of IRF5 and IRF3. Thus phosphorylation likely activates IRF5 and other family members by triggering remarkable conformational rearrangements that switch the C-terminal segment from an autoinihibitory to a dimerization role.
登录
查看更多内容
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
DOI:
10.1107/s0907444998003254
发表时间:
1998-09-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子:
--
作者:
Brunger, AT;Adams, PD;Warren, GL
通讯作者:
Warren, GL
影响因子:
4
作者:
Cutress, Mark L.;Whitaker, Hayley C.;Neal, David E.
通讯作者:
Neal, David E.
影响因子:
4.4
作者:
Cheng, Tsu-Fan;Rzostek, Sabrina B.;Reich, Nancy C.
通讯作者:
Reich, Nancy C.
影响因子:
5.3
作者:
Lin, RT;Heylbroeck, C;Hiscott, J
通讯作者:
Hiscott, J