Anti-p63/TP63 Antibody Picoband® Fluoro488 Conjugated

TP63 (Tumor Protein p63), also known as KET, is a protein that in humans is encoded by the TP63 gene. Yang et al. (1998) described the cloning of tumor protein p63, which shows strong homology to the tumor suppressor p53 and the p53-related protein p73. By fluorescence in situ hybridization, Yang et al. (1998) localized the human TP63 gene to chromosome 3q27-q29. Hibi et al. (2000) stated that p53 homologs known variously as p40, p51, p63, and p73L (Trink et al., 1998, Yang et al., 1998, Osada et al., 1998, Senoo et al., 1998) are isoforms of the same gene, which Hibi et al. (2000) referred to as AIS for amplified in squamous cell carcinoma.

Tumor protein 63; p63; Chronic ulcerative stomatitis protein; CUSP; Keratinocyte transcription factor KET; Transformation-related protein 63; TP63; Tumor protein p73-like; p73L; p40; p51; TP63; KET, P63, P73H, P73L, TP73L

Widely expressed, notably in heart, kidney, placenta, prostate, skeletal muscle, testis and thymus, although the precise isoform varies according to tissue type. Progenitor cell layers of skin, breast, eye and prostate express high levels of DeltaN-type isoforms. Isoform 10 is predominantly expressed in skin squamous cell carcinomas, but not in normal skin tissues. .

Apoptosis, Cancer, Cancer Susceptibility, Cell Biology, Cell Cycle, Cell Cycle Inhibitors, DNA/RNA, DNA Damage & Repair, DNA Damage Response, Epigenetics and Nuclear Signaling, Intracellular, Oncoproteins/Suppressors, p53 Pathway, Transcription, Tumor Suppressors

Acts as a sequence specific DNA binding transcriptional activator or repressor. The isoforms contain a varying set of transactivation and auto-regulating transactivation inhibiting domains thus showing an isoform specific activity. Isoform 2 activates RIPK4 transcription. May be required in conjunction with TP73/p73 for initiation of p53/TP53 dependent apoptosis in response to genotoxic insults and the presence of activated oncogenes. Involved in Notch signaling by probably inducing JAG1 and JAG2. Plays a role in the regulation of epithelial morphogenesis. The ratio of DeltaN-type and TA*-type isoforms may govern the maintenance of epithelial stem cell compartments and regulate the initiation of epithelial stratification from the undifferentiated embryonal ectoderm. Required for limb formation from the apical ectodermal ridge. Activates transcription of the p21 promoter. .

1. Hibi, K., Trink, B., Patturajan, M., Westra, W. H., Caballero, O. L., Hill, D. E., Ratovitski, E. A., Jen, J., Sidransky, D. AIS is an oncogene amplified in squamous cell carcinoma. Proc. Nat. Acad. Sci. 97: 5462-5467, 2000. 2. Osada, M., Ohba, M., Kawahara, C., Ishioka, C., Kanamaru, R., Katoh, I., Ikawa, Y., Nimura, Y., Nakagawara, A., Obinata, M., Ikawa, S. Cloning and functional analysis of human p51, which structurally and functionally resembles p53. Nature Med. 4: 839-843, 1998. 3. Senoo, M., Seki, N., Ohira, M., Sugano, S., Watanabe, M., Inuzuka, S., Okamoto, T., Tachibana, M., Tanaka, T., Shinkai, Y., Kato, H. A second p53-related protein, p73L, with high homology to p73. Biochem. Biophys. Res. Commun. 248: 603-607, 1998. Note: Erratum: Biochem. Biophys. Res. Commun. 250: 536 only, 1998. 4. Trink, B., Okami, K., Wu, L., Sriuranpong, V., Jen, J., Sidransky, D. A new human p53 homologue. (Letter) Nature Med. 4: 747-748, 1998. 5. Yang, A., Kaghad, M., Wang, Y., Gillett, E., Fleming, M. D., Dotsch, V., Andrews, N. C., Caput, D., McKeon, F. p63, a p53 homolog at 3q27-29, encodes multiple products with transactivating, death-inducing, and dominant-negative activities. Molec. Cell 2: 305-316, 1998.