Tyrosine kinase that functions as cell surface receptor for fibrillar collagen and regulates cell differentiation, remodeling of the extracellular matrix, cell migration, cell proliferation, and cell cycle progress. Required for normal bone development. Regulates osteoblast differentiation and chondrocyte maturation via a signaling pathway that involves MAP kinases and leads to the activation of the transcription factor RUNX2. Regulates remodeling of the extracellular matrix by up-regulation of the collagenases MMP1, MMP2 and MMP13, and thereby facilitates cell migration and tumor cell invasion. Promotes fibroblast migration and proliferation, and thereby contributes to cutaneous wound healing. Depending on the cell type, promotes or inhibits cell proliferation. Can mediate cell cycle arrest in some types of tumor cells.
Specificity
Natural and recombinant Human Discoidin domain-containing receptor 2
Binds hydroxyproline-rich sequence motifs in fibrillar, glycosylated collagen, such as the GQOGVMGFO motif, where O stands for hydroxyproline. Interacts with SRC. Interacts (tyrosine phosphorylated) with SHC1.