Invitrogen™ Phospho-PYK2 (Tyr881) Polyclonal Antibody

PTK2B (FAK2) is a cytoplasmic tyrosine kinase involved in calcium-induced regulation of ion channels and activation of the map kinase signaling pathway. PTK2B regulates reorganization of the actin cytoskeleton, cell polarization, cell migration, adhesion, spreading, and bone remodeling. FAK2 plays a role in the regulation of the humoral immune response and is required for normal levels of marginal B-cells in the spleen and normal migration of splenic B-cells. It functions in signaling downstream of integrin and collagen receptors, immune receptors, G-protein coupled receptors, cytokine, chemokine, and growth factor receptors, and mediates responses to cellular stress. Aberrant FAK2 expression may play a role in cancer cell proliferation, migration, and invasion in tumor formation and metastasis. Elevated expression has been seen in gliomas, hepatocellular carcinoma, lung cancer, and breast cancer.