Anti-PIG3/TP53I3 Antibody Picoband® Fluoro647 Conjugated

Putative quinone oxidoreductase is an enzyme that in humans is encoded by the TP53I3 gene. The protein encoded by this gene is similar to oxidoreductases, which are enzymes involved in cellular responses to oxidative stresses and irradiation. This gene is induced by the tumor suppressor p53 and is thought to be involved in p53-mediated cell death. It contains a p53 consensus binding site in its promoter region and a downstream pentanucleotide microsatellite sequence. P53 has been shown to transcriptionally activate this gene by interacting with the downstream pentanucleotide microsatellite sequence. The microsatellite is polymorphic, with a varying number of pentanucleotide repeats ly correlated with the extent of transcriptional activation by p53. It has been suggested that the microsatellite polymorphism may be associated with differential susceptibility to cancer. Alternatively spliced transcript variants encoding different isoforms have been found for this gene.

Regulates the translocation of phosphorylated SRC to peripheral cell-matrix adhesion sites. Required for proper architecture of actin filaments. Inhibits the Wnt/beta-catenin signaling pathway, probably by recruiting CTNNB1 to recycling endosomes and hence preventing its translocation to the nucleus. Participates in angiogenesis. May play a role in the polarity, proliferation and migration of endothelial cells. Selectively promotes FGF-induced MAPK activation through SRC.

1. Contente, A., Dittmer, A., Koch, M. C., Roth, J., Dobbelstein, M. A polymorphic microsatellite that mediates induction of PIG3 by p53. Nature Genet. 30: 315-320, 2002. 2. Polyak, K., Xia, Y., Zweier, J. L., Kinzler, K. W., Vogelstein, B. A model for p53-induced apoptosis. Nature 389: 300-305, 1997.