The regulation of antigen-receptor signaling by protein tyrosine phosphatases: a hole in the story.

The regulation of antigen-receptor signaling by protein tyrosine phosphatases: a hole in the story.
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蛋白酪氨酸磷酸酶对抗原受体信号传导的调节:故事中的一个漏洞。

DOI:
10.1016/s0952-7915(99)80044-2
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发表时间:
1999
影响因子:
7
通讯作者:
M. Thomas
M. Thomas
中科院分区:
医学2区
文献类型:
--
作者:
M. Thomas

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抗原受体信号需要src家族激酶启动酪氨酸磷酸化。在抗原受体结合之前,CD45会使src家族激酶的抑制位点去磷酸化,从而“启动”激酶。目前尚不清楚为什么CD45也不去磷酸化抗原受体细胞质域内的“活化”激酶或基序,从而阻止信号转导。最近的报道提出了CD45被排除在抗原受体之外的可能性,其机制可能包括脂质微域的形成。
Antigen-receptor signaling requires Src-family kinases to initiate tyrosine phosphorylation. CD45 dephosphorylates the inhibitory site in Src-family kinases before antigen-receptor engagement and thus serves to ‘prime’ the kinases. It has been unclear why CD45 does not also dephosphorylate ‘activated’ kinases or motifs within the cytoplasmic domains of antigenreceptors and thus prevent signal transduction. Recent reports raise the possibility that CD45 is excluded from engaged antigen-receptors by mechanisms that may include the formation of lipid microdomains.
DOI: 10.1073/pnas.88.6.2037
发表时间: 1991-03-01
影响因子: 11.1
作者:
KORETZKY, GA;PICUS, J;WEISS, A
通讯作者: WEISS, A
DOI: 10.1126/science.1648262
发表时间: 1991-06-28
期刊: SCIENCE
影响因子: 56.9
作者:
JUSTEMENT, LB;CAMPBELL, KS;CAMBIER, JC
通讯作者: CAMBIER, JC