Gene structure in prokaryotes

1
Gene structure in prokaryotes

• Genes are usually grouped together in operons.
• E.g. lac operon
• Gene grouping means that the mRNA will contain
  multiple information (polycistronic mRNA).
• Synthesis of these mRNAs is dependent on the
  needs of the cell.

2
Gene structure in eukaryotes

• Eukaryotic Genes are more complex.
• DNA is separated in compartments such as the
  nucleus, mitochondria.
• Genes contain introns and exons.

3
Gene expression

• RNA polymerase binding.
• chain initiation.
• chain elongation.
• chain termination and release of RNA.
• rRNA binding and mRNA-tRNA cross matching.