Anti-E4 antibodies can be readily obtained from commercial sources. The E4 protein is a reported synonym for the human gene UBE4B, encoding ubiquitination factor E4B. The full-length protein is 146,185 daltons in mass with 4 identified isoforms. This protein is a member of the Ubiquitin conjugation factor E4 family. Visit the antibody supplier page for key details, including validated applications and target specificity.