Crystallographic studies? What is wrong with simply doing the gradient suggested by two commenters in the blog entry? If that turns up negative, you can immediately get an answer and scrap the whole paper. (Which in itself leads to quite some speculations...)
Anyway, if the calculations and assertions made in the blog (and the commenters) turn out to be correct, this will be a big black eye for Science (the journal...) for publishing this.
There are quite a few biophysical techniques that could be done such as AUC, spectroscopy, scattering and crystallography. The facilities and equipment would play a role in which to pursue. The experiment I am suggesting is not very complicated, but of course depends on people's backgrounds.
Anyway, if the calculations and assertions made in the blog (and the commenters) turn out to be correct, this will be a big black eye for Science (the journal...) for publishing this.