Question

State three ways by which the concentration of a protein in a cell can be regulated?

Answer 1

Three ways by which the concentration of a protein in a cell can be regulated by

1.some proteins are regulated by the non covalent binding of small molecules such as amino acids or nucleotides. This cause a change in the conformation of protein and thus the activity is protein can be regulated.

2.some proteins are regulated by interactions among polypeptides making up the proteins .some times the interactions may be between proteins and other proteins of the cell .

3. Some proteins are regulated by phosphorylation of specific amino acids on specific proteins. Phosphorylation means the addition of phosphate groups . This phosphorylation is reversible.