Zymolyase is produced by a submerged culture of Arthrobacter luteus, which has an effective lytic activity against cell walls of viable yeast cells to produce protoplast or spheroplast of various strains of yeast cells. Zymolyase is a necessary part of the protocol for many experimental procedures including immunofluorescence, transformation, protein purification and spheroplasting. MAIN FEATURES: Strong lytic activity against living yeast cell walls | Provided as a lyophilized powder | Suitable for protoplast/spheroid preparation, yeast cell fusion, transformation of yeast cells, and yeast genetics | Activity of 20,000 units/g | Produced by a submerged culture of Arthrobacter luteus and their essential enzyme activity is β-1,3-glucan laminaripentao-hydrolase.