Protein Phosphatase Inhibitor Explorer Kit.
One of the most common post-translational modifications is the phosphorylation of proteins at serine, threonine and/or tyrosine residues. Indeed, genetic engineering and mutagenesis studies have also enabled the production of intrinsically activated mutants which biologically �mimic� the phosphorylated form of the protein. Along with protein phosphorylation, the cell needs to be able to reverse the activated/non-activated form of the protein via the removal of the phosphate group. Protein phosphatases play such a role in the cell and are responsible for removing phosphate groups from serine/threonine and tyrosine residues.