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Short description of the PTPN11base : The PTPN11 gene encodes SHP-2, a cytoplasmic tyrosine phosphatase that consists of two tandemly arranged SH2 domains at the N-terminus, a catalytic domain, and a C-terminal tail. SHP-2 is a critical component in several signalling pathways involved in the control of developmental processes, hematopoiesis, and metabolism. Variations in PTPN11 cause Noonan syndrome (NS), a developmental disorder characterized by facial dysmorphisms, short stature, skeletal and haematological defects, and cardiovascular abnormalities. Leopard sydrome (LS), a clinically related disorder, is caused by variations in the SHP-2 catalytic domain. PTPN11 variations also occur in several human cancers, including juvenile myelomonocytic leukaemia (JMML), myelodysplastic syndrome (MDS), B-cell acute lymphoblastic leukaemia (BLL), and acute myelogeneous leukaemia (AML). The activating PTPN11 variations play a broad role in cancer, because SHP-2 acts as a signal-enhancing signalling component in pathways that regulate cell growth, transformation, differentiation, and migration. The protein is also required for normal Ras activation in many of these pathways. ![]() ![]() Our other bioinformatics services: SH2base - Database for pathogenic SH2 domain variations KinMutBase - A registry of disease-causing variations in protein kinase domains |
This site is updated by Gerard Schaafsma
© Protein Structure and Bioinformatics, Lund University, 2017
Last modified 17.04.2024