The Tumour Suppressor Parafibromin and the Architecture of the hPaf1C, Fachbücher von Florian Kowalke
53,90 €
Parafibromin (PFM) is a recently identified tumour suppressor that is lost in various types of cancer, including parathyroid, renal, breast and gastric cancer. PFM is a component of the Paf1 complex (Paf1C), which is thought to have key roles at various stages of the gene expression pathway. In the present work, we identified the molecular architecture of the human Paf1C (hPaf1C). We found that the C-terminus of PFM interacts with the hPaf1C. Since almost all known clinically relevant PFM mutations effect the expression of the C-terminal part of PFM, our findings provide evidence that the tumour supressor function of PFM is dependent on the hPaf1C. Interestingly, we further found that the same domain on PFM that is responsible for binding to -Catenin mediates the interaction to Paf1 and Ski8 and report for the first time that PFM is able to dimerize in vitro and that it is the only hPaf1.
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