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Hrs Is Associated with STAM, a Signal-transducing Adaptor Molecule

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Asao, Hironobu, Sasaki, Yoshiteru, Arita, Tomikazu, Tanaka, Nobuyuki, Endo, Kazuhiro, Kasai, Hirotake, Takeshita, Toshikazu, Endo, Yuichi, Fujita, Teizo, Sugamura, Kazuo·1997·Journal of Biological Chemistry

Abstract

We previously reported a new type of signal-transducing adaptor molecule, STAM, which was shown to be involved in cytokine-mediated intracellular signal transduction. In this study, we molecularly cloned a 110-kDa phosphotyrosine protein inducible by stimulation with interleukin 2 (IL-2). The 110-kDa molecule was found to be a human counterpart of mouse Hrs (hepatocyte growth factor-regulated tyrosine kinase substrate) and to be associated with STAM. Tyrosine phosphorylation of Hrs is induced rapidly after stimulation with IL-2 and granulocyte-macrophage colony-stimulating factor as well as hepatocyte growth factor. The mutual association sites of Hrs and STAM include highly conserved coiled-coil sequences, suggesting that their association is mediated by the coiled-coil structures. Exogenous introduction of the wild-type Hrs significantly suppressed DNA synthesis upon stimulation with IL-2 and granulocyte-macrophage colony-stimulating factor, while the Hrs mutant deleted of the STAM-binding site lost such suppressive ability. These results suggest that Hrs counteracts the STAM function which is critical for cell growth signaling mediated by the cytokines.

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Metadata

Authors
Asao, H., Sasaki, Y., Arita, T., Tanaka, N., Endo, K., Kasai, H., Takeshita, T., Endo, Y., Fujita, T., & Sugamura, K.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1997-12
Volume
272
Issue
52
Pages
32785-32791
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2036673687
Cited by
188
References
1
FWCI
4.15
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Hrs Is Associated with STAM, a Signal-transducing Adaptor Molecule. https://app.cochat.ai/papers/10.1074/jbc.272.52.32785
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Asao, H., Sasaki, Y., Arita, T., Tanaka, N., Endo, K., Kasai, H., Takeshita, T., Endo, Y., Fujita, T., & Sugamura, K. (1997). Hrs Is Associated with STAM, a Signal-transducing Adaptor Molecule. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.272.52.32785

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