Protein kinase domain containing, cytoplasmic (PKDCC)

Protein kinase domain containing, cytoplasmic (PKDCC), also known as vertebrate lonesome kinase (VLK) and Sugen kinase 493 (SGK493), is a secreted protein tyrosine kinase that phosphorylates extracellular and secretory pathway proteins. It plays a critical role in skeletal system development, including bone elongation through regulation of chondrocyte differentiation, and is also implicated in extracellular matrix and platelet signaling. PKDCC influences the Hedgehog signaling pathway and is linked via genetic studies to congenital disorders affecting bones, limbs, and craniofacial features. Its broad expression across multiple tissues highlights its fundamental role in developmental biology, but no drug directly targeting PKDCC is currently approved[1][2][3][5].

Other names

Vertebrate lonesome kinase (VLK)Sugen kinase 493 (SGK493)SgK493Vlkextracellular tyrosine-protein kinase PKDCCprotein kinase-like protein SgK493sugen kinase 493vertebrate lonesome kinase

Drugs (if developed) would likely function as enzymatic inhibitors (protein kinase inhibitors), modulating extracellular phosphorylation activity. Indirect mechanisms may involve regulation of signaling cascades like Hedgehog pathway or extracellular matrix-related signaling[3].