Protein tyrosine kinase

Tyrosine kinase receptor/pathwayA protein kinase phosphorylating tyrosine participating in numerous processes in the regulation of cell growth and differentiation.  It also has a function in maintaining adult tissues. When tyrosine is phosophorylated,  it results in a change in the function of protein The phosphorylation of tyrosine residues in turn results in a change in the function of the protein in which they are embedded.  In short, they function as ‘on/off switches’.  Tyrosine is an amino acid, and thus one of the standard building blocks of protein.  Kinase is an enzyme that targets lipids, nucleic acids and proteins    

See Amino acids, Differentiation, Enzyme, Nucleic acid, Phosphorylation, Proteins, Tyrosine kinase receptor/pathway