A portion of amino acids 26-54 from the human protein was used as the immunogen for this A4GALT antibody.
Lactosylceramide 4-alpha-galactosyltransferase catalyzes the transfer of galactose to lactosylceramide to form globotriaosylceramide, which has been identified as the P(k) antigen of the P blood group system. The encoded protein, which is a type II membrane protein found in the Golgi, is also required for the synthesis of the bacterial verotoxins receptor.