Phospholipase A2 enzyme from the venom of Egyptian honey bee Apis mellifera lamarckii with anti-platelet aggregation and anti-coagulation activities

BACKGROUND: Honey bee venom contains various enzymes with wide medical and pharmaceutical applications. RESULTS: The phospholipase A2 (PLA2) has been apparently purified from the venom of Egyptian honey bee (Apis mellifera lamarckii) 8.9-fold to a very high specific activity of 6033 U/mg protein using DEAE–cellulose and Sephacryl S-300 columns. The purified bee venom PLA2 is monomeric 16 kDa protein and has isoelectric point (pI) of 5.9. The optimal activity of bee venom PLA2 was attained at pH 8 and 45 °C. Cu(2+)(,) Ni(2+), Fe(2+)(,) Ca(2+), and Co(2+) exhibited a complete activating effect on it, while Zn(2+), Mn(2+), NaN(3), PMSF, N-Methylmaleimide, and EDTA have inhibitory effect. CONCLUSIONS: The purified bee venom PLA2 exhibited anti-platelet aggregation and anti-coagulation activities which makes it promising agent for developing novel anti-clot formation drugs in future.