Using Bayesian Networks to Analyze Expression Data1

In biology proteins play a central role. They are the most important “building parts” of living organisms having important functions (enzymes, structure, regulation, signalling, defence). Molecular biology teaches us that proteins are built in a process called gene expression or protein expression. The information is stored in genes on the DNA, located in the cell nucleus. Since proteins are synthesised in the cytoplasm (liquid outside the nucleus) thee information must be transferred there. This is done by transcribing DNA to mRNA (messenger RNA, a single-stranded helix). The mRNA is transported to the ribosome in the cytoplasm where the protein synthesis take place.