TABLE 1.

Purification of OleY methyltransferase activity

Purification step	Sp act (pmol · min−1 · mg of protein−1)	Purification (fold)
Cell extraction	0.03	1
(NH4)2SO4 precipitation	0.04	1.52
Phenyl-Sepharose elution	0.05	1.52
Sephacryl S-200 elution	0.99	29.77
Q-Sepharose elution	2.56	76.89