Styxl2, a sarcomeric muscle-specific pseudophosphatase in vertebrates, functions in sarcomere assembly by promoting protein degradation of non-muscle myosin IIs.
Substrate recognition by a receptor protein tyrosine phosphatase is mediated by binding to its pseudophosphatase domain via a short helix that is >100 amino acids distant from the target phosphosite, uncovering principles of phosphatase substrate recognition and potential scaffolding functions.
Gareth W Fearnley, Katherine A Young ... Hayley J Sharpe
Systematic proteomic approaches identify several cell junction regulators as substrates for the homophilic receptor tyrosine phosphatase PTPRK and implicate its pseudophosphatase domain in substrate recognition.
