p40, also known as Tumor protein 63, p63, Chronic ulcerative stomatitis protein, CUSP, Keratinocyte transcription factor , KET, Transformation-related protein 63, TP63, Tumor protein p73-like, p73L, p40, or p51, and encoded by the gene TP63/KET/P63/P73H/P73L/TP73L, is a member of the p53 protein...