Description: The polyclonal antibody reacts with mouse, human, and rat beta-catenin; the antibody was raised against a peptide mapping to the carboxy terminal domain of human beta-catenin. The multifunctional beta-catenin protein was originally identified through its association with the cadherin class of cell adhesion proteins (1&2). It was later found to be an integral part of signal transduction pathways and the best studied is the Wnt/beta-catenin pathway (3). Wnt signaling inhibits the degradation of beta-catenin and as a result beta-catenin becomes transcriptionally active (3-5). The deregulation of Wnt signaling leads to the accumulation of beta-catenin, allowing it to become transcriptionally active for a number of genes. Many of these genes are associated with cancer, such as colorectal cancer and melanomas (3&4).