Protein kinases are enzymes that transfer the terminal phosphate from ATP to an amino acid residue on the target protein. Many are located on the plasma membrane as integral membrane proteins or peripheral membrane proteins. What purpose may be served by their plasma membrane localization?
A) ATP is more abundant near the plasma membrane.
B) They can more readily encounter and phosphorylate other membrane proteins.
C) Membrane localization lowers the activation energy of the phosphorylation reaction.
D) They flip back and forth across the membrane to access target proteins on either side.
E) They require phospholipids as a cofactor.
An example of horizontal gene transfer: antibiotic resistance
Reaction mechansim for glyceraldehyde-3-phosphate dehydrogenase
Protein Needs Are Determined by Nitrogen Balance in Your Body
Dolly the sheep was the first mammal cloned by nuclear transfer from a somatic cell
Lac repressor protein binding. The crystal structural model of Lac repressor binding at lacO