Protein-tyrosine kinase 2-beta (PTK2B)

Non-receptor protein-tyrosine kinase that regulates reorganization of the actin cytoskeleton, cell polarization, cell migration, adhesion, spreading and bone remodeling. Plays a role in the regulation of the humoral immune response, and is required for normal levels of marginal B-cells from the spleen and normal migration of splenic B-cells.

Required for normal macrophage polarization and migration towards sites of inflammation. May inhibit differentiation and activity of osteoprogenitor cells.