Atomic level details still a mystery

This is a description of an article, behind a pay wall at a magazine named: Nature Structural & Molecular BiologyA molecular motor finds its track pp920 - 921
Jared C Cochran and F Jon Kull
doi:10.1038/nsmb.2644
The detailed mechanism by which the molecular motors kinesin and
myosin travel along their respective protein tracks as they generate
force during motile processes is still poorly understood. In a recent
breakthrough, a crystal structure of kinesin in complex with tubulin
illuminates the atomic-level details of a motor-track interaction,
answering many questions yet leaving a number of mysteries unresolved.
http://links.ealert.nature.com/ctt?kn=37&ms=NDIyMzkwMDkS1&r=MTc2OTgwNzA4NAS2&b=2&j=MTk3NDk3ODEwS0&mt=1&rt=0