These proteins are also present at lower levels under normal growth conditions. The proteins presumably help protect the cell from detrimental effects of heat shock. Based on your knowledge of proteins structure, suggest a reason why a sudden increase in temperature might be detrimental to a cell. You need not identify specific proteins.
Histones are unusual proteins with respect to their net electrostatic charge.
Identify one post-translational modification that can change the charge of histones. You then extract the DNA in both samples using high salt concentrations and analyze the DNA using gel electrophoresis. Draw a cartoon diagram of what the gel electrophoresis results would look like. Explain any differences between the two samples. You are investigating whether changes in chromatin structure are involved in the expression of globin , a protein produced only in red blood cells .