Romanov G A
Mol Biol (Mosk). 1990 Mar-Apr;24(2):536-40.
A suggestion of the importance of end modifications of pre-mRNA and RNA for selective defence of RNA coding sequences in the course of processing allows postulating the relationship between RNA modifications and presence of introns in genes. This conclusion was verified by comparing the presence of introns with RNA end modifications in different types of organisms, subcellular organelles and some genes; in the whole an obvious correlation of these phenomena was shown.