Polyadenylation and Termination

*CstF

*CPSF

*PAP

*PABP

Torpedo model for transcription termination

Polyadenylation

*CstF

*CPSF

*PAP

*PABP

RNA processing in eukaryotesAddition of poly A tail

Addition of 5’cap

Splicing

Formation of the 5’ cap

*RNA triphosphatase

*guanylyl transferase

*methyl transferase

Transcript Processing

Functions of the Cap

ProtectionTranslatability TransportSplicing

Splicing

Spliceosome-mediated splicing