Model for RNA fate decisions: Early during its production by PolII, the CBC-bound cap of the emerging RNA is contacted by ‘productive’ (PHAX) and ‘destructive’ (ZC3H18) factors. These proteins form mutually exclusive complexes with the CBC until a ‘decision point’ (e.g. a terminator) is encountered by PolII, after which RNA fate is determined by stable interaction with either PHAX or ZC3H18.

21.03.2017 | Forskning

Sorting RNA for production or decay

Our genomes are promiscuously transcribed into RNA. How cells manage to sort this massive genomic output into functional and non-functional material has remained enigmatic. New research describes protein interactions involved in such RNA fate determination.