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. 2006 Jun 27;361(2):243–256. doi: 10.1016/j.jmb.2006.06.021

Figure 9.

Figure 9

RNA binding by Nsp15 K289A. (a) Electron micrograph of negatively stained 2D crystal of Nsp15. (b) Fourier transform of the 2D crystal. (c) The 2D projection of Nsp15 with P2 symmetry. One unit cell is labeled;(a = 92.9 Å, b = 186.7 Å, γ = 87.6°). (d) The 2D projection of Nsp15- in complex with U16 (P2 symmetry, a = 95.8 Å, b = 179.8 Å, γ = 83.8°). (e) Two rU16s are fitted into the grooves present in the interface between the dimers of trimers of a hexameric Nsp15. The bottom image is rotated by 90° relative to the top image.