A cell is incubated with a radioactive lipid called [3H]-palmitic acid. Membrane proteins are then isolated from the cell using multiple different treatments. High pH and high salt treatments serve to reduce the strength of ionic and hydrogen-bonding interactions. Determine the type of membrane protein that is isolated from each of these treatments.

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.