期刊
ONCOGENE
卷 29, 期 16, 页码 2357-2367出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/onc.2009.511
关键词
tumour suppressor; pRb; lysine methylation; Set7/9; HP1
资金
- CRUK
- EU
- LRF
- MRC
- AICR
- MRC [G0500905, G9400953] Funding Source: UKRI
- Medical Research Council [G9400953, G0500905] Funding Source: researchfish
The pRb tumour suppressor protein has a central role in coordinating early cell cycle progression. An important level of control imposed on pRb occurs through post-translational modi. cation, for example, phosphorylation. We describe here a new level of regulation on pRb, mediated through the targeted methylation of lysine residues, by the methyltransferase Set7/9. Set7/9 methylates the C-terminal region of pRb, both in vitro and in cells, and methylated pRb interacts with heterochromatin protein HP1. pRb methylation is required for pRb-dependent cell cycle arrest and transcriptional repression, as well as pRb-dependent differentiation. Our results indicate that methylation can influence the properties of pRb, and raise the interesting possibility that methylation modulates pRb tumour suppressor activity. Oncogene (2010) 29, 2357-2367; doi:10.1038/onc.2009.511; published online 8 February 2010
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