Abstract
Application of Sanger techniques to the analysis of the 3 terminal oligonucleotide from E. coli32P-labelled 16S rRNA yields the sequence AUCACCUCCUUAOH. This sequence is identical in RNA isolated from two wild-type strains (MRE600 and E. coli B, SY106) and from a mutant strain (AB301/105) defective in RNase III. Data presented here explains the previous derivation of an incorrect sequence (AUCCUCACUUCAOH) by others. The functional significance of complementarity between the 3 terminus of 16S rRNA and poly-purine tracts commonly found in mRNA initiator regions is discussed.