Figure 4.

Cryo- and micro-diffraction data collected from rat-tail tendon. (a) Cryo-frozen native rat-tail tendon data extending past 4 Å. The pattern was collected with an exposure time of 5 min using the microfocus diffraction set-up on the BioCAT beamline 18-ID. (b) The arrow points to the 4 Å helix merdional, whilst meridional reflections from the 670 Å repeat are clearly seen extending from low resolution (a) to just below the water ice ring [red arrow in (c) and labels in green therein]. (c) Background-subtracted, folded and smoothed pattern to more clearly show data in (b). *1 labels 160th reflection; *2 data from −10l row line (off-equatorial reflection series) both extend past 4.2 Å.