The fission yeast Schizosaccharomyces pombe is an attractive model organism for studying eukaryotic biology due to the ease of genetic and molecular manipulations (3). In recent years, several selectable markers and promoters have been developed to enhance our ability to manipulate gene expression in this yeast. Recently, Invitrogen (Carlsbad, CA, USA) has developed the SpECTRA S. pombe Expres...