Ab initio phasing starting from low resolution

Titre en anglais du périodique : International journal for structural, physical, and chemical aspects of crystalline materials. Article dans revue scientifique avec comité de lecture.A single set of structure factor magnitudes complete at low resolution plus information of a general type are sufficient to get initial phases for macromolecular crystals which allow one to see the molecular packing and an approximate envelope. Followed by a more careful analysis based on the same information, these ab initio phases can be extended so that the corresponding maps show secondary structure elements