The cyclic polyether non actin selectively binds and transports K+ ions, while the acyclic polyether monensin (see page 234 for the structure) selectively binds and transports Na+ ions. Use information in Section 8.9 to help you answer the following questions.
a. Which atoms in these two compounds are likely to be involved in binding the metal cations? Explain.
b. Suggest a reason why non actin is selective for K+ while monensin is selective for Na+.