Light-activated kinases enable temporal dissection of signaling networks in living cells.
Light-activated kinases enable temporal dissection of signaling networks in living cells.
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DOI:
10.1021/ja1109979
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发表时间:
2011-02-23
影响因子:
15
通讯作者:
Chin, Jason W.
中科院分区:
文献类型:
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作者:
Gautier, Arnaud;Deiters, Alexander;Chin, Jason W.
We report a general strategy for creating protein kinases in mammalian cells that are poised for very rapid activation by light. By photoactivating a caged version of MEK1, we demonstrate the specific, rapid, and receptor independent activation of an artificial subnetwork within the Raf/MEK/ERK pathway. Time-lapse microscopy allowed us to precisely characterize the kinetics of elementary steps in the signaling cascade and provided insight into adaptive feedback and rate-determining processes in the pathway.
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