1Why regulate protein production at every step in the proces

1.Why regulate protein production at every step in the process rather than just at the level of transcription?

Solution

At every step in the production of a protein (transcription, translation, processing, etc.) there can be inhibition or activation depending on certain conditions.Any step of the transcription can be regulated to control the rate at which RNA is transcribed.Changes in in the cellular environment can lead to increased or decreased transcription of particular genes.Extracellular signals can also trigger a variety of biochemical events which results in changes in gene expression.Any step of gene expression may be modulated,from the DNA-RNA transcription step to post-translational modification of a protein.Each step in the flow of information from DNA to RNA to protein provides the cell with a potential control point for self-regulating its functions by adjusting the amount and type of proteins it manufactures.At any given time, the amount of a particular protein in a cell reflects the balance between that protein\'s synthetic and degradative biochemical pathways.