Association of p72 with the src Homology-2 (SH2) Domains of PLC1 in B Lymphocytes (*)
Association of p72 with the src Homology-2 (SH2) Domains of PLC1 in B Lymphocytes (*)
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p72 与 B 淋巴细胞中 PLC1 的 src 同源 2 (SH2) 结构域的关联 (*)
DOI:
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发表时间:
1995
影响因子:
4.8
通讯作者:
J. Monroe
中科院分区:
文献类型:
--
作者:
A. L. Sillman;J. Monroe
Phospholipase C-catalyzed inositol phospholipid hydrolysis, a critical step in B cell antigen receptor signaling leading to second messenger generation and proliferation, depends upon tyrosine kinase activation. The B cell antigen receptor-associated tyrosine kinases p53/56, p59, p55, and p72 are assumed to participate in receptor-initiated signaling. It is unknown, however, which of these kinases is involved in the tyrosine phosphorylation and resulting activation of phospholipase C in response to antigen receptor cross-linking. We have used a fusion protein containing the tandem src homology-2 (SH2) domains of phospholipase C1 (PLC1) to identify B cell kinases which associate with PLC1. Using an in vitro kinase assay, we demonstrate SH2-dependent association of tyrosine kinase activity from anti-μ-stimulated B cells. The PLC1 SH2 domains associate with a prominent 70-72-kDa tyrosine phosphoprotein from anti-μ-stimulated, but not resting, B cells. Immunoblotting and secondary immunoprecipitation studies definitively identify this protein as p72. These results imply a physical interaction between PLC1 and p72 in antigen receptor-stimulated B cells. This conclusion is confirmed by our ability to co-immunoprecipitate p72 and PLC1 from lysates of anti-μ-stimulated B cells. These results implicate p72 in the activation of phospholipase C1 during B cell antigen receptor signaling.
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影响因子:
2.9
作者:
GUAN, KL;DIXON, JE
通讯作者:
DIXON, JE
DOI:
--
发表时间:
1984
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Coggeshall,KM;Cambier,JC
通讯作者:
Cambier,JC
DOI:
--
发表时间:
1992
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Hempel,WM;Schatzman,RC;DeFranco,AL
通讯作者:
DeFranco,AL
DOI:
--
发表时间:
1991
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Hempel,WM;DeFranco,AL
通讯作者:
DeFranco,AL
DOI:
10.1073/pnas.92.2.359
发表时间:
1995-01
影响因子:
11.1
作者:
Svetlana P. Sidorenko;Che-Leung Law;K. Chandran;Edward A. Clark
通讯作者:
Svetlana P. Sidorenko;Che-Leung Law;K. Chandran;Edward A. Clark