Process of Splicing in the formation of Eukaryotic mRNA

INTRODUCTION:

Transcription, otherwise known as gene expression, is the transfer of genetic information from DNA to RNA. Transcription creates a partial copy of messenger RNA (mRNA), and transfer RNA (tRNA). Control and regulation of gene expression is a prerequisite for life; if all genes were switched on at the same time, it would consume far more energy than the eukaryote cell could provide. The processing of the RNA formed involves a number of steps cut out and adds certain parts and molecules to produce a final mRNA strand ready to begin the process of translation.

TRANSCRIPTION:

The production of RNA involves the usual base pairing and is catalysed by RNA polymerase. Signals encoded in the DNA instruct the enzyme to begin transcribing which are called promoters. The amount of RNA transcribed depends upon the promoter, as it is this, which binds to the enzymes. Several other factors (along with the promoter) play a crucial role in the regulation of transcr...