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WW domain-containing transcription regulator protein 1 (WWTR1) is a transcriptional coactivator which acts as a downstream regulatory target in the Hippo signaling pathway that plays a pivotal role in organ size control and tumor supression by restricting proliferation and promoting apoptosis. The core of this pathway is composed of a kinase cascade wherein STK3/MST2 and STK4/MST1, in complex with its regulatory protein SAV1, phosphorylates and activates LATS1/2 in complex with its regulatory protein MOB1. In turn, MOB1 phosphorylates and inactivates YAP1 oncoprotein and WWTR1/TAZ. WWTR1 enhances PAX8 and NKX2-1/TTF1-dependent gene activation. WWTR1 regulates the nuclear accumulation of SMADS and has a key role in coupling them to the transcriptional machinery such as the mediator complex. WWTR1 also regulates embryonic stem-cell self-renewal and promotes cell proliferation and epithelial-mesenchymal transition.
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Protein Aliases: DKFZp586I1419; FLJ27004; FLJ45718; transcriptional co-activator with PDZ-binding motif; Transcriptional coactivator with PDZ-binding motif; WW domain-containing transcription regulator protein 1
Gene Aliases: TAZ; WWTR1
UniProt ID: (Human) Q9GZV5
Entrez Gene ID: (Human) 25937
Molecular Function:
enzyme modulator
kinase modulator
transcription cofactor
transcription factor
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