Anti-ERalpha antibodies can be readily obtained from commercial sources. The ERalpha protein is a reported synonym for the human gene ESR1, encoding estrogen receptor 1. The full-length protein is 66,216 daltons in mass with 4 identified isoforms. This protein is reported to contain sites of glycosylation. The ERalpha antigen is a documented cancer marker. Visit the antibody supplier page for key details, including validated applications and target specificity.