Chapter 25, Problem 8A

Summary Introduction

Introduction:

The RNA produced after transcription needs some processing before it can be translated into proteins. This process is called RNA processing. RNA processing involves three steps:

• Addition of 7-methylguanosine at the 5’ end of mRNA or capping

• Cleavage and adenylation at 3’ end

• RNA splicing, which involves splicing of regions of mRNA that do not code for proteins, called introns and joining the remaining regions, called exons to form a single continuous molecule.