FUNCTION: Interacts with TGF-beta receptor type-1 (TGFBR1) and inhibits dissociation of activated SMAD2 from TGFBR1, impeding its nuclear accumulation and resulting in impaired TGF-beta signaling. May also affect FOXO, Hippo and Wnt signaling. {ECO:0000269|PubMed:26039994}....
                        FUNCTION: Interacts with TGF-beta receptor type-1 (TGFBR1) and inhibits dissociation of activated SMAD2 from TGFBR1, impeding its nuclear accumulation and resulting in impaired TGF-beta signaling. May also affect FOXO, Hippo and Wnt signaling. {ECO:0000269|PubMed:26039994}.
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                        GO - Biological processes (BP): 
                        negative regulation of SMAD protein signal transduction [GO:0060392]; negative regulation of transforming growth factor beta receptor signaling pathway [GO:0030512]; regulation of signal transduction [GO:0009966]...
                        negative regulation of SMAD protein signal transduction [GO:0060392]; negative regulation of transforming growth factor beta receptor signaling pathway [GO:0030512]; regulation of signal transduction [GO:0009966]
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                        GO - Molecular function (MF): 
                        phosphatidylinositol-5-phosphate binding [GO:0010314]...
                        phosphatidylinositol-5-phosphate binding [GO:0010314]
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                        GO - Cellular component (CC): 
                        plasma membrane [GO:0005886]...
                        plasma membrane [GO:0005886]
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