Journal
CELL
Volume 110, Issue 1, Pages 55-67Publisher
CELL PRESS
DOI: 10.1016/S0092-8674(02)00809-7
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Defining the molecular mechanisms that integrate diverse signaling pathways at the level of gene transcription remains a central issue in biology. Here, we demonstrate that interleukin-1beta (IL-1beta) causes nuclear export of a specific N-CoR corepressor complex, resulting in derepression of a specific subset of NF-kappaB-regulated genes, exemplified by the tetraspanin KA/1 that regulates membrane receptor function. Nuclear export of the N-CoR/TAB2/HDAC3 complex by IL-1beta is temporally linked to selective recruitment of a Tip60 coactivator complex. Surprisingly, KA/1 is also directly activated by a ternary complex, dependent on the acetyltransferase activity of Tip60, consisting of the presenilin-dependent C-terminal cleavage product of the amyloid beta precursor protein (APP), Fe65, and Tip60, identifying a specific in vivo gene target of an APP-dependent transcription complex in the brain.
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