Keyhole limpet hemocyanin (KLH) is a large, multi-subunit, O2-carrying, metalloprotein. It is isolated from a marine snail species called Megathura crenulate.

Keyhole limpet hemocyanin (KLH) exhibits immunostimulatory properties and stimulates both cell-mediated and humoral responses in animals and humans. It serves as a vaccine adjuvant and facilitates protein conjugation. In addition, KLH acts as a carrier protein to produce antibodies as well as haptens such as peptides and oligosaccharides. It is also used in the treatment of bladder cancer.

Please refer to vial label for lot-specific concentration.

In 10 mM MgSO₄, 5 mM BES buffer, 0.9% NaCl, pH 6.5. Sterile-filtered.

KLH is an extremely large protein complex that has a tendency to aggregate and precipitate from solutions. Use a buffer when diluting KLH and maintain the magnesium concentration at ≥10 mM. Store KLH solutions at 4°C. DO NOT freeze, vortex or agitate to dissolve KLH. Freezing or agitating KLH will cause protein aggregation and precipitation.

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Toxicity: Standard Handling (A)