Direct methods and macromolecular crystallography: lights and limits

Towards direct phase retrieval in macromolecular crystallography.

and G. Stubbs. 1985. Solving the phase problem in fiber diffraction. Application to tobacco mosaic virus at 3.6 A resolution. Acta Crystallogr. (Sect. A). 41:252-262. Smith, P. J. C., and S. Arnott. 1978. LALS: A linked-atom least-squares reciprocal-space refinement system incorporating stereochemical restraints to supplement sparse diffraction data. Acta Crystallogr. (Sect. A). 34:3-11. Stubbs...

Generalized Covering Groups and Direct Limits

Direct methods for surface crystallography

In the most developed branches of crystallography, structure solution proceeds by two distinct steps: first, an approximate model of the structure is deduced directly from the measured data by an algorithm which assumes no preconceived model; second, a process of structure refinement simulates the experimental data for systematic variations of the parameters of such a model and determines a fin...

Laue crystallography: Lights! Camera! Action!

Recent advances in the Laue method of X-ray data collection from protein crystals have allowed very short-lived reaction intermediates to be observed successfully.

Macromolecular Crystallography at Chess

CHESS activity report F many years, most synchrotron stations for crystallography, such as CHESS A1, used X-ray sensitive film as the primary detector and xray radiation at about 8 keV (1.5 Å). Two years ago CHESS constructed station F1 on a wiggler line that is tuneable from about 7-14 keV. In practice, this station operates with a standard energy of 0.91 Å. The benefits of using higher energi...