IRAK: A Kinase Associated with the Interleukin-1 Receptor

23 February 1996

journal article
other
Published by American Association for the Advancement of Science (AAAS) in Science

Vol. 271 (5252) , 1128-1131
https://doi.org/10.1126/science.271.5252.1128

Abstract

The pleiotropic biological activities of interleukin-1 (IL-1) are mediated by its type I receptor (IL-1RI). When the ligand binds, IL-1RI initiates a signaling cascade that results in the activation of the transcription regulator nuclear factor kappa B (NF-κB). A protein kinase designated IRAK (IL-1 receptor-associated kinase) was purified, and its complementary DNA was molecularly cloned. When human embryonic kidney cells (cell line 293) overexpressing IL-1RI or HeLa cells were exposed to IL-1, IRAK rapidly associated with the IL-1RI complex and was phosphorylated. The primary amino acid sequence of IRAK shares similarity with that of Pelle, a protein kinase that is essential for the activation of a NF-κB homolog in Drosophila.

Keywords

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