P63

P63 is a tumor protein belonging to the P53 family. It is a multi-isoform protein required for epidermal development. One isoform of P63 is involved in skin development and stem/progenitor cell regulation. Another isoform functions in apoptosis. P63 domains structure is similar to that of P53 with an N-terminal transactivation domain (TAD) followed by proline-rich region, DNA-binding domain (DBD) and tetramerization domain. In addition, the P63 contains an additional C-terminal region with SAM (Sterile a-Motif) and transactivation inhibitory domains. The SAM domain is involved in protein-protein interactions.

Function

Disease

Mutations in P63 result in cleft lip or palate syndromes, split hand/foot malformation or ectodermal dysplasia.

Relevance

Structural highlights