Regulation of gene expression in eukaryotes ppt

The amounts and types of mRNA molecules in a cell reflect the function of that cell. In fact, thousands of transcripts are produced every second in every cell. Given this statistic, it is not surprising that the primary control point for gene expression is usually at the very beginning of the protein production process — the initiation of transcription.

Regulation of gene expression in eukaryotes slideshare

RNA transcription makes an efficient control point because many proteins can be made from a single mRNA molecule.

Transcript processing provides an additional level of regulation for eukaryotes, and the presence of a nucleus makes this possible.

In prokaryotes, translation of a transcript begins before the transcript is complete, due to the proximity of ribosomes to the new mRNA molecules. In eukaryotes, however, transcripts are modified in the nucleus before they are exported to the cytoplasm for translation.

Eukaryotic transcripts are also more complex than prokaryotic transcripts.

For instance, the primary transcripts synthesized by RNA polymerase contain sequences that will not be part of the mature RNA. These interveni

how is gene expression regulated in prokaryotes and eukaryotes

gene expression control in eukaryotes and prokaryotes