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.
There are several layers of regulation of gene expression. One way that genes are regulated is through the remodeling of chromatin. Chromatin is the complex of DNA and the histone proteins with which it associates. If the way that DNA is wrapped around the histones changes, gene expression can change as well. Chromatin remodeling is accomplished through two main mechanisms: The first way is post translational modification of the amino acids that make up histone proteins.