Using the crystallography history as a tool for crystallography and science education

Protein engineering as a tool for crystallography.

The generation of large quantities of protein by overexpression technology has enabled structural studies of many important molecules that are found in only minute quantities in the cell. An increasing number of structures of proteins overexpressed in non-native systems have been solved. Crystallographers now have an extremely powerful tool, namely protein engineering, for the generation of nat...

Crystallography in Material Science

The compositions and purity of polycrystalline powder samples of Nd0.7Sr0.3 Mn1-x MgxO3 (x = 0.0, 0.1, 0.2, 0.3), LaCr1-xMnxO3 (x = 0.0, 0.1, 0.2, 0.3) and La1-x Ndx Cr0.5 Mn0.5 O3 (x = 0.0, 0.15, 0.2) were characterized by X-ray diffraction and chemical analysis. The magnetic properties were investigated by neutron powder diffraction technique and magnetization measurement using a SQUID. All t...

Crystallography Materials Science & Metallurgy

Crystallography in Material Science

We have investigated the nuclear density distributions in LaGaO3based perovskites, LaGaO3 (LG), (La0.9Sr0.1)GaO3(LSG), La(Ga0.9Mg0.1)O3(LGM), and (La0.8Sr0.2)(Ga0.8Mg0.15Co0.05)O3(LSGMC), to elucidate the ionic conduction path and disorder of oxide ions at elevated temperatures. Neutron diffraction data were collected in the temperature range from 26 to 1405oC in air, using a diffractometer HER...

Mass spectrometry as a tool for protein crystallography.

Atomic resolution structure determinations of proteins by X-ray crystallography are formidable multidisciplinary undertakings, requiring protein construct design, expression and purification, crystallization trials, phase determination, and model building. Modern mass spectrometric methods can greatly facilitate these obligate tasks. Thus, mass spectrometry can be used to verify that the desire...