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Figure 2
(a) Assignment of secondary-structure elements in all OaPAC structures. (b) The basic SAXS parameters Rg (radius of gyration; orange), Dmax (maximum size; olive) and Rg(GNOM) (Rg calculated using GNOM; Svergun, 1992BB71; green) derived from the theoretical SAXS profiles of the OaPAC structures (Supplementary Fig. S3) calculated for all four OaPAC structures are presented and shown as bars. SEC-SAXS data are from Ujfalusi-Pozsonyi et al. (2024BB75). GNOM (Svergun, 1992BB71) is an indirect transform program for small-angle scattering data processing. It reads in one-dimensional scattering curves (possibly smeared with instrumental distortions) and evaluates the particle distance distribution function P(r). For Rg, R2 is 1.0 for all structures and 0.9908 for SEC-SAXS, and for Dmax χ2 = 1.88 × 10−7 for WT SFX, 2.31 × 10−7 for WT SSX, 2.04 × 10−7 for WT cryo-MX, 1.27 × 10−7 for Y6W cryo-MX and 1.0728 for SEC-SAXS.

IUCrJ
Volume 11| Part 6| November 2024| Pages 991-1006
ISSN: 2052-2525
https://doi.org/10.1107/S2052252524010170