Phosphorylation of A170 stress protein by casein kinase II-like activity in macrophages.

Phosphorylation of A170 stress protein by casein kinase II-like activity in macrophages.
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巨噬细胞中酪蛋白激酶 II 样活性对 A170 应激蛋白的磷酸化。

DOI:
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发表时间:
1997
期刊:
Biochemical and Biophysical Research Communications - BBRC
影响因子:
--
通讯作者:
T. Ishii
T. Ishii
中科院分区:
--
文献类型:
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作者:
T. Yanagawa;K. Yuki;H. Yoshida;S. Bannai;T. Ishii

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A170 是一种氧化应激诱导蛋白,具有一个锌指结构域、两个 PEST 序列和许多丝氨酸/苏氨酸激酶的潜在磷酸化位点。这些结构特征表明 A170 的磷酸化影响其功能和降解。我们发现 A170 在培养的小鼠腹腔巨噬细胞中被磷酸化。此外,使用重组 A170 蛋白,我们通过凝胶内激酶测定在细胞提取物中发现了两种具有激酶活性的 40 和 44 kDa 蛋白。我们将内在 A170 激酶的特性与丝裂原激活蛋白激酶 (ERK 2)、蛋白激酶 A (PKA)、酪蛋白激酶 II (CK II) 和蛋白激酶 C 的特性进行了比较,因为它们的催化亚基的分子质量与 A170 激酶相似。 ERK 2、CK II 和 PKA 磷酸化重组 A170 作为底物。巨噬细胞提取物中存在的 40 和 44 kDa 激酶在底物特异性、药理学特性、免疫反应性和组织中普遍表达方面与 CK II 的 α 和 α' 亚基相似。
A170 is an oxidative stress-inducible protein having a Zinc finger domain, two PEST sequences, and many potential phosphorylation sites for serine/threonine kinases. These structural features suggest that the phosphorylation of A170 affects its function and degradation. We have found that A170 is phosphorylated in cultured murine peritoneal macrophages. In addition, using recombinant A170 proteins, we found two proteins of 40 and 44 kDa with kinase activity in cell extracts using an in-gel kinase assay. We compared the properties of the intrinsic A170 kinases with those of mitogen-activated protein kinase (ERK 2), protein kinase A (PKA), casein kinase II (CK II), and protein kinase C, since their catalytic subunits have molecular masses similar to A170 kinases. ERK 2, CK II, and PKA phosphorylated recombinant A170 as a substrate. The 40 and 44 kDa kinases present in the macrophage extract were similar to alpha and alpha' subunits of CK II in respect to substrate specificity, pharmacological properties, immuno-reactivities, and ubiquitous expression in tissues.
p72syk 酪氨酸激酶由诱导淋巴细胞酪氨酸磷酸化和 Ca2 信号的氧化条件激活。
DOI: --
发表时间: 1993
期刊: The Journal of biological chemistry
影响因子: --
作者:
Schieven,GL;Kirihara,JM;Burg,DL;Geahlen,RL;Ledbetter,JA
通讯作者: Ledbetter,JA
DOI: 10.1126/science.2876518
发表时间: 1986-10-17
期刊: SCIENCE
影响因子: 56.9
作者:
ROGERS, S;WELLS, R;RECHSTEINER, M
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肝素对酪蛋白激酶 II 的抑制作用。
DOI: --
发表时间: 1980
期刊: The Journal of biological chemistry
影响因子: --
作者:
Hathaway,GM;Lubben,TH;Traugh,JA
通讯作者: Traugh,JA