A putative internal promoter in the 16 S/23 S intergenic spacer of the rRNA operon of archaebacteria and eubacteria

Abstract

The existence of the internal promoter Pi in the 16 S/23 S intergenic spacers of the rRNA operons of an eubacterium Escherichia coli and archaebacterium Halobacterium halobium is proposed. The possible functional significance of these promoters is discussed.