This is a physical model of a bacterial flagellum. It was imaged and modeled at Brandeis University in the DeRosier lab and printed at the University of Wisconsin - Madison. It was fabricated on a ZCorp Z406 printer from a VRML generated at Brandeis.

This is from a species of Salmonella. "Starting from the top: in blue, axial/helical components, including cap, hook-filament junction, hook (or universal joint), and rod (or drive shaft); in purple [light blue in this model], L and P rings (or bushing); in yellow, proposed location of FliF, a transmembrane protein that couples the motor to the drive shaft; in red, proposed location of FliG, one of the motor/switch proteins; in blue, proposed location of FliM and FliN, two other motor/switch proteins" (as quoted from the legend to the figure on the cover of Journal of Bacteriology, October 2006). Way too much detail, I know. I just print the physical models.