Uniqueness of the macromolecular crystallographic phase problem

作者：Millane Rick P^*; Arnal Romain D

来源：Acta Crystallographica A-Foundation and Advances, 2015, 71(6): 592-598.

DOI：10.1107/S2053273315015387

• uniqueness
• phase problem
• ab initio phasing
• macromolecular crystallography

Uniqueness of the phase problem in macromolecular crystallography, and its relationship to the case of single particle imaging, is considered. The crystallographic problem is characterized by a constraint ratio that depends only on the size and symmetry of the molecule and the unit cell. The results are used to evaluate the effect of various real-space constraints. The case of an unknown molecular envelope is considered in detail. The results indicate the quite wide circumstances under which ab initio phasing should be possible.

• 出版日期2015-11