Hexagonally-based patterns of phosphorylated tubulins in microtubules

This is one of those articles about a research breakthrough which kind of just goes by unnoticed for the most part, yet its implications are profound:

Scientists Claim Brain Memory Code Cracked

In an article in the March 8 issue of the journal PLoS Computational Biology, physicists Travis Craddock and Jack Tuszynski of the University of Alberta, and anesthesiologist Stuart Hameroff of the University of Arizona demonstrate a plausible mechanism for encoding synaptic memory in microtubules, major components of the structural cytoskeleton within neurons.