Thanks for the model! I decided to print this to see whether the Ultimaker at the hackerspace could handle it, as it was the only protein structure here that had been printed FDM here, as far as I could see. I printed it at 50% scale, 0.3mmlayer height, and enabled supports touching the bed only in Cura. That meant a lot of support to remove, but it worked pretty well, and only took about an hour to print at this size. Now to find some more structures to print!