Anti-IGI antibodies can be readily obtained from commercial sources. The IGI protein is a reported synonym for the human gene VPREB1, encoding V-set pre-B cell surrogate light chain 1. The full-length protein is 145 amino acids in length and 16,605 daltons in mass. This protein is a member of the Immunoglobulin superfamily. Visit the antibody supplier page for key details, including validated applications and target specificity.