Nuclear-targeted GDOWN1 potently suppresses tumors by inducing premature transcription termination and exporting Pol Ⅱ CTD phosphatases to activate RB.
A novel interconnected regulatory cascade triggered by nuclear translocation of GDOWN1 is uncovered: it remodels Pol II phosphorylation landscape and induces global transcriptional repression, which further drives cytoplasmic kinase-phosphatase coordination to activate master cell cycle suppressors and ultimately arres...