Function
p63 is a tumor protein belonging to the p53 family. It is a multi-isoform protein required for epidermal development[1]. 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.
Disease
Mutations in p63 result in cleft lip or palate syndromes, split hand/foot malformation or ectodermal dysplasia[2], [3].
Relevance
One isoform of p63 is involved in skin development and stem/progenitor cell regulation[4]. Another isoform functions in apoptosis[5].
Structural highlights
- . Water molecules are shown as red spheres.
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