Which of the following accounts for some of the specificity of the K⁺channel? A) The radius of solvated Na⁺is smaller than the radius of solvated K⁺. B) The number of $\beta$-strands that make up the channel. C) The orientation of backbone carbonyl oxygen atoms in the channel. D) Alternating positive and negative amino acids in the channel pore.

Question

Quizplus · Accepted Answer

The specificity of ion channels, such as the potassium channel, is often determined by the precise orientation of atoms within the channel that interact with the ion. In the case of potassium channels, the orientation of backbone carbonyl oxygen atoms plays a crucial role in selectively allowing potassium ions to pass through while excluding other ions, such as sodium, based on size and interaction differences.

Which of the Following Accounts for Some of the Specificity β\betaβ

Which of the Following Accounts for Some of the Specificity $\beta$