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Figure 2
Experimental electron density contoured at 1σ. On the left is density of the same 75 Å2 region of space, while on the right is a stereoview of FAD with the density from the map. Figures generated with Snapshot from O (Jones et al., 1991BB8) (left) and BOBSCRIPT (Esnouf, 1997BB5) utilizing the GL_RENDER interface (L. Esser and J. Deisenhofer, unpublished work) and POV-Ray (right). (a) Initial map from SOLVE. (b) Map after initial solvent flattening, averaging and phase extension. (c) Map after mask improvement, cross-crystal averaging with native, SIROAS and non-isomorphous SeMet-1 data. Back-translation of the final refined structure into the P21 cell shows that the solvent boundaries in (b) are completely wrong.

Journal logoBIOLOGICAL
CRYSTALLOGRAPHY
ISSN: 1399-0047
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