Figure 4
Electron density of a missing part of the structure can be recovered by a combination of the detwinning procedure and NCS averaging. (a) An OMIT (2|Fobsdetwinned| − |Fcalc|), φcalc map calculated using the phases and the twinning portions derived from the final AiV1 model with deleted residues 117–120 of VP2. (b) An electron-density map for the missing part was recovered by ten cycles of NCS averaging. |