What Was Thought to be the Problem is Actually the Solutionrecent study has added more information about how potassium channels perform their amazing feats.
One of the conundrums with ion channels is how ions of like charge, which therefore repulse each other, could be stuffed through the small hole in the ion channel protein machine. One possible answer is that the ions are separated from each other. For more than a decade now it has been thought that the potassium ions flowing through potassium channels are separated by water molecules. This would avoid the problem that the positively charged potassium ions repel each other, not making for a very smooth or concentrated flow.
The new study, however, persuasively argues that, in fact, the potassium ions travel together, not separated by water molecules. This higher concentration of potassium ions is achieved with a subtle, complex design of the charge contour within the channel. In fact, as the paper explains, the “repulsion between adjacent ions is found to be the key to high-efficiency K+ conduction.”
That's incredible, and this poses a problem for the theory of evolution because it means that random mutations, rather than forming a gene that produces some simple, easily formed molecular donut, instead must have discovered an astronomically unlikely design. Final causes and teleology which are so much despised by evolutionists are clearly the better explanation for the potassium channel. No that doesn’t mean science comes to an end, no that is not a religious explanation, and no that isn’t the final word in the matter. That is just what the science is telling us, loud and clear.