Background: Core promoters

which immediately flank transcriptional starting sites

play an important role in eukaryotic transcriptional regulation.As a new frontier in this field

their diversified shapes

structures and regulatory mechanisms have been discovered in higher eukaryotes in recent years.Purpose: To further analyze their structure and transcriptional regulation mechanisms in simple eukaryotes.Methods: We used CAGE technology to capture the transcriptional starting sites in fission yeast（Schizosaccharomyces pombe） on a genome-wide scale.We identified their core promoter regions and analyzed their shape and sequence.Results: Our research revealed that lower eukaryotes

like yeast

share the similar diversity in their core promoter structure with higher eukaryotes.Conclusions: Our result suggests that transcriptional regulations are probably more complicated in lower eukaryotes than we previously thought.