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Kappes, F.* ; Waldmann, T.* ; Mathew, V.* ; Yu, J.* ; Zhang, L.* ; Khodadoust, M.S.* ; Chinnaiyan, A.M.* ; Luger, K.* ; Erhardt, S.* ; Schneider, R.* ; Markovitz, D.M.*

The DEK oncoprotein is a Su(var) that is essential to heterochromatin integrity.

Genes Dev. 25, 673-678 (2011)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
Heterochromatin integrity is crucial for genome stability and regulation of gene expression, but the factors involved in mammalian heterochromatin biology are only incompletely understood. Here we identify the oncoprotein DEK, an abundant nuclear protein with a previously enigmatic in vivo function, as a Suppressor of Variegation [Su(var)] that is crucial to global heterochromatin integrity. We show that DEK interacts directly with Heterochromatin Protein 1 α (HP1α) and markedly enhances its binding to trimethylated H3K9 (H3K9me3), which is key for maintaining heterochromatic regions. Loss of Dek in Drosophila leads to a Su(var) phenotype and global reduction in heterochromatin. Thus, these findings show that DEK is a key factor in maintaining the balance between heterochromatin and euchromatin in vivo.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
ISSN (print) / ISBN 0890-9369
e-ISSN 1549-5477
Quellenangaben Volume: 25, Issue: 7, Pages: 673-678 Article Number: , Supplement: ,
Publisher Cold Spring Harbor Laboratory Press
Non-patent literature Publications
Reviewing status Peer reviewed