Which factor contributes to the selectivity pore of the potassium channel from S. lividans?

Question

Quizplus · Accepted Answer

Both backbone carbonyl groups in irregular secondary structures and negatively charged amino acids near the channel opening contribute to the selectivity pore of the potassium channel from S. lividans. The backbone carbonyl groups in irregular secondary structures form hydrogen bonds with the potassium ions, while negatively charged amino acids near the channel opening interact with the potassium ions through electrostatic interactions, both of which contribute to the selectivity of the channel for potassium ions. The N-terminal ends of the helices also play a role in stability and structure of the channel but do not directly contribute to the selectivity pore.

Which Factor Contributes to the Selectivity Pore of the Potassium α\alphaα

Which Factor Contributes to the Selectivity Pore of the Potassium $\alpha$