DYKDDDDK or FLAG® tag is an octapeptide tag that can be added to a protein using recombinant DNA technology. It can be fused to the N-terminus or C-terminus of a target protein to facilitate detection and purification. GenScript Anti-DYKDDDDK G1 Affinity Resin (Cat. No. L00432) is designed for the purification of DYKDDDDK-tagged protein from commonly used protein expression systems including bacteria, yeast and mammalian cells. The DYKDDDDK-tagged protein in the cell lysate can specifically bind to the anti-DYKDDDDK monoclonal antibodies coupled to the resin. Nonspecific bindings are eliminated by stringent washing steps, and the target protein is finally eluted with high recovery rate. Table 1 lists the main characteristics of Anti-DYKDDDDK G4 Affinity Resin.