Lyophilized recombinant Human Epigen remains stable up to 6 months at -80 °C from date of receipt. Upon reconstitution, Human Epigen should be stable up to 1 week at 4 °C or up to 2 months at -20 °C.
Epigen is an EGF-related polypeptide growth factor that signals through the ErbB receptor-1. It is produced in several tissues, including the testis, liver, heart and in certain tumor cells. Epigen is mitogenic for fibroblasts and epithelial cells. Human Epigen is initially synthesized as a glycosylated precursor protein, which is processed by proteolytic cleavage to produce a mature soluble sequence. Synonyms: EPG, Epithelial mitogen