Rabbit Anti-Bacteriophage PhiC31 Integrase Polyclonal antibody for WB, ELISA. Integrase is a site-specific recombinase. Integrase contains a Ser_Recombinase domain and belongs to the Serine Recombinase family. A DNA binding domain may be present either N-or C-terminal to the catalytic domain. These enzymes perform site-specific rec