Dual Site Phosphorylation of Caspase-7 by PAK2 Blocks Apoptotic Activity by Two Distinct Mechanisms.
Dual Site Phosphorylation of Caspase-7 by PAK2 Blocks Apoptotic Activity by Two Distinct Mechanisms.
复制标题
caspase-7对caspase-7的双位点磷酸化通过两种不同的机制阻止了凋亡活性。
DOI:
10.1016/j.str.2016.11.001
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发表时间:
2017-01-03
期刊:
影响因子:
--
通讯作者:
Hardy JA
中科院分区:
文献类型:
--
作者:
Eron SJ;Raghupathi K;Hardy JA
Caspases, the cysteine proteases that execute apoptosis, are tightly regulated via phosphorylation by a series of kinases. Although all apoptotic caspases work in concert to promote apoptosis, different kinases regulate individual caspases. Several sites of caspase-7 phosphorylation have been reported, but without knowing the molecular details, it has been impossible to exploit or control these complex interactions, which normally prevent unwanted proliferation. During dysregulation, PAK2 kinase plays an alternative anti-apoptotic role, phosphorylating caspase-7 and promoting unfettered cell growth and chemotherapeutic resistance. PAK2 phosphorylates caspase-7 at two sites, inhibiting activity using two different molecular mechanisms, before and during apoptosis. Phosphorylation of caspase-7 S30 allosterically obstructs its interaction with caspase-9, preventing intersubunit linker processing, slowing or preventing caspase-7 activation. S239 phosphorylation renders active caspase-7 incapable of binding substrate, blocking later events in apoptosis. Each of these mechanisms is novel, representing new opportunities for synergistic control of caspases and their counterpart kinases.
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影响因子:
4
作者:
Hill ME;MacPherson DJ;Wu P;Julien O;Wells JA;Hardy JA
通讯作者:
Hardy JA
影响因子:
8
作者:
Huber, Kristen L.;Hardy, Jeanne A.
通讯作者:
Hardy, Jeanne A.
DOI:
10.1073/pnas.94.25.13642
发表时间:
1997-12-09
影响因子:
11.1
作者:
Lee, N;MacDonald, H;Williams, LT
通讯作者:
Williams, LT
影响因子:
4.8
作者:
Jakobi, R;Moertl, E;Koeppel, MA
通讯作者:
Koeppel, MA
影响因子:
16
作者:
Erener, Sueheda;Petrilli, Virginie;Hottigert, Michael O.
通讯作者:
Hottigert, Michael O.