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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Exchange of N-CoR corepressor and Tip60 coactivator complexes links gene expression by NF-kappaB and beta-amyloid precursor protein.

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 KAI1 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, KAI1 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.[1]

References

  1. Exchange of N-CoR corepressor and Tip60 coactivator complexes links gene expression by NF-kappaB and beta-amyloid precursor protein. Baek, S.H., Ohgi, K.A., Rose, D.W., Koo, E.H., Glass, C.K., Rosenfeld, M.G. Cell (2002) [Pubmed]
 
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