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Figure 6
(a) FXS data calculated from the two haemoglobin crystal intermediates 1bbb (CO-haemoglobin; green and red cartoon and dotted lines) and 2hbb (deoxy-haemoglobin; blue cartoon and solid lines) in the Protein Data Bank. The average root mean-square difference between the two intermediates was approximately 2 Å and data were computed for l ≤ 4 (black, red and green curves). (b) The relative differences, |ΔBl(q)|/Bl(q), between the two states at the Shannon sampling points (multiples of π/dmax = 0.044 Å−1) (black squares, red circles and green triangles), indicate the average increased sensitivity of Bl(q) for l > 0, as illustrated by the dotted lines. This additional sensitivity, combined with the independent nature of the higher-order curves, ultimately results in a more precise determination of macromolecular structures in solution.

IUCrJ
Volume 2| Part 3| March 2015| Pages 309-316
ISSN: 2052-2525
doi:10.1107/S2052252515002535