phosphotyrosine peroxidase conjugate

The role of tyrosine phosphorylation in transduction of the mitogenic signal from transmembrane receptors and in transformation by oncogene tyrosine kinases has been the subject of intense investigation for several years, While the phosphorylation of specific tyrosine residues has be shown to be a primary mechanism of signal transduction during normal mitogenesis, cell cycle progression and oncogenic transformation, its role in other areas such as differentiation and gap junction communication, is a matter of active and ongoing research. Antibodies that specifically recognize phosphorylated tyrosine residues have proved invaluable to the study of tyrosine-phosphorylated proteins and the biochemical pathways in which they fuction. The HRP conjugate of PY20 anti-phosphotyrosine is especailly useful for the detection of phosphotyrosyl proteins in western blotting, immunohistochemical and immuncytochemical protcols in situations wherin the use of a secondary antibody would produce undesirable background signals.