Protoplasts of Schizosaccharomyces pombe: an improved method for their preparation and the study of their guanine uptake.
A new method is described for the efficient conversion of Schizosaccharomyces pombe cells into protoplasts. The following parameters of guanine uptake determined in whole cells were unchanged in protoplasts: Km value, requirement for an energy source, sensitivity to competitive inhibitors, pH optimum, as well as the typical variation of the initial velocity of uptake observed during the growth phase.
Housset P, Nagy M, Schwencke J