Summary of hnRNA processing in eukaryotes
(a) RNA Polymerase
initiates
transcription of an hnRNA
strand from the DNA template
strand.
(b) The 5' end of the
hnRNA is capped with
7mG.
(c) Transcription continues to
the termination signal,
after which (d) the trailing 3'
end is removed. (e) The 3'
end is polyadenylated.
(f) The final hnRNA product is now capped (to protect the 5' end) and tailed (to allow the 3' end to pass through the nuclear membrane.
(f) The final hnRNA product is now capped (to protect the 5' end) and tailed (to allow the 3' end to pass through the nuclear membrane.
Figure © 2002 Griffiths et al.; All text material © 2024 by Steven M. Carr