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

Transcriptional modification by a CASK-interacting nucleosome assembly protein.

CASK acts as a coactivator for Tbr-1, an essential transcription factor in cerebral cortex development. Presently, the molecular mechanism of the CASK coactivation effect is unclear. Here, we report that CASK binds to another nuclear protein, CINAP, which binds histones and facilitates nucleosome assembly. CINAP, via its interaction with CASK, forms a complex with Tbr-1, regulating expression of the genes controlled by Tbr-1 and CASK, such as NR2b and reelin. A knockdown of endogenous CINAP in hippocampal neurons reduces the promoter activity of NR2b. Moreover, NMDA stimulation results in a reduction in the level of CINAP protein, via a proteasomal degradation pathway, correlating with a decrease in NR2b expression in neurons. This study suggests that reduction of the CINAP protein level by synaptic stimulation contributes to regulation of the transcriptional activity of the Tbr-1/CASK/CINAP protein complex and thus modifies expression of the NR2b gene.[1]

References

  1. Transcriptional modification by a CASK-interacting nucleosome assembly protein. Wang, G.S., Hong, C.J., Yen, T.Y., Huang, H.Y., Ou, Y., Huang, T.N., Jung, W.G., Kuo, T.Y., Sheng, M., Wang, T.F., Hsueh, Y.P. Neuron (2004) [Pubmed]
 
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