کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10770378 | 1050833 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Stabilization of integrin-linked kinase by binding to Hsp90
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موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
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چکیده انگلیسی
Integrin-linked kinase (ILK) is a serine/threonine kinase that interacts with the cytoplasmic domain of β-integrins and growth factor receptors in response to extracellular signals. It is a key molecule in cell adhesion, proliferation, and cell survival. We found that treating cells with specific inhibitors of the heat shock protein 90 (Hsp90) caused rapid cell detachment. Screening the responsible proteins revealed a decreased amount of ILK in Hsp90 inhibitor-treated cells. ILK was identified as a new Hsp90 client protein because it formed a complex with Hsp90 and Cdc37, and binding was suppressed by Hsp90 inhibitors. Experiments with a series of ILK-deletion mutants revealed that the amino acid residues 377-406 were required for Hsp90 binding. Dissociation of ILK from Hsp90 shortened its half-life by promoting proteasome-dependent degradation. These results indicate that Hsp90 plays an important role in the stability of ILK in cells.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical and Biophysical Research Communications - Volume 331, Issue 4, 17 June 2005, Pages 1061-1068
Journal: Biochemical and Biophysical Research Communications - Volume 331, Issue 4, 17 June 2005, Pages 1061-1068
نویسندگان
Yumiko Aoyagi, Naoya Fujita, Takashi Tsuruo,