As K⁺ passes through the selectivity filter of the K⁺ channel of Streptomyces lividans it interacts with A) glycine side chains. B) amino acid carbonyl groups. C) tyrosine side chains. D) amino acid amino groups.

Question

Quizplus · Accepted Answer

The selectivity filter of the K⁺ channel interacts with K⁺ ions through the carbonyl groups of the amino acids lining the filter, which mimic the hydration shell of the ion.

As K+ Passes Through the Selectivity Filter of the K+

As K⁺ Passes Through the Selectivity Filter of the K⁺