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dual specificity phosphatase-like domain of serine/threonine/tyrosine-interacting protein Serine/threonine/tyrosine-interacting protein (STYX), also called protein tyrosine phosphatase-like protein, is a catalytically inactive member of the protein tyrosine phosphatase family that plays an integral role in regulating pathways by competing with active phosphatases for binding to MAPKs. It acts as a nuclear anchor for MAPKs, affecting their nucleocytoplasmic shuttling.
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