A SIMPLE AND EFFICIENT METHOD FOR THE ISOLATION OF TOTAL RNA FROM THEFISSION YEAST SCHIZOSACCHAROMYCES-POMBE

A simple and efficient procedure was described for the isolation of to tal RNA from the fission yeast Schizosaccharomyces pombe. The present study demonstrated that the quality and the quantity of S. pombe RNA w ere increased by substituting phenol/chloroform mixture for phenol as a deproteinizing agent in the first vortexing step and using an ice ba th instead of a dry ice-ethanol bath in the freezing step. Additionall y, this protocol had the advantage of extracting total RNA without any degradation of S. pombe cells. Furthermore, the high amounts and qual ity of RNA extracted by this modified procedure enabled us to perform some experiments such as Northern blot, S1 mapping, primer extension, and reverse transcriptase reaction-polymerase chain reaction (RT-PCR) without further RNA purification. We suggest that this procedure is ve ry useful to analyse primary structures and steady-state levels of RNA from S. pombe.