One name that jumps out from the list above: Philip Morris Companies Inc, one of the world's largest manufacturers of cigarettes and tobacco products. Philipmorris.com states: The Philip Morris name has long been associated with high quality tobacco products and globally recognized cigarette brands.
A type of gene expression control in bacteria. Transcription of a gene under this type of control is induced only when a repressor protein present in the cell is inactivated.
Also, eukaryotic gene expression is usually regulated by a combination of several regulatory proteins acting together, which allows for greater flexibility in the control of gene expression. Figure 4: The complexity of multiple regulators. Transcriptional regulators can each have a different role.iven 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 â the initiation of transcription. RNA transcription makes an efficient control point because many proteins can be made from a single mRNA molecule.