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Transcriptional Repressor DAXX Promotes Prostate Cancer Tumorigenicity via Suppression of Autophagy. PDF available through Get Fulltext Research

Puto, Lorena A Brognard, John Hunter, Tony

Published in The Journal of biological chemistry

The DAXX transcriptional repressor was originally associated with apoptotic cell death. However, recent evidence that DAXX represses several tumor suppressor genes, including the DAPK1 and DAPK3 protein kinases, and is up-regulated in many cancers argues that a pro-survival role may predominate in a cancer context. Here, we report that DAXX has pot...

The RING finger protein RNF8 ubiquitinates Nbs1 to promote DNA double-strand break repair by homologous recombination. PDF available through Get Fulltext Research

Lu, Chi-Sheng Truong, Lan N Aslanian, Aaron Shi, Linda Z Li, Yongjiang Hwang, Patty Yi-Hwa Koh, Kwi Hye Hunter, Tony Yates, John R 3rd Berns, Michael W ...

Published in The Journal of biological chemistry

Ubiquitination plays an important role in the DNA damage response. We identified a novel interaction of the E3 ubiquitin ligase RNF8 with Nbs1, a key regulator of DNA double-strand break (DSB) repair. We found that Nbs1 is ubiquitinated both before and after DNA damage and is a direct ubiquitination substrate of RNF8. We also identified key residue...

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