Analysis of endogenous small RNAs indicated that a fraction derive from a biosynthetic mechanism that is similar to that of secondary siRNAs formed during RNAi, suggesting that small antisense transcripts derived
from cellular messenger RNAs by RdRP activity may have key roles in cellular regulation.
They all use RNA molecules as
messengers to transfer the information
from DNA to
cellular factories called ribosomes, which then build proteins, which in turn drive our metabolisms and form the structures of our cells.