X-ray Spectrometry / Ezine
Knocking out resistance - X-ray structure lays bare last of multidrug biochemistry
Date: Oct 1, 2010
Author: David Bradley
An X-ray structure determined by US researchers reveals details of the only remaining class of multidrug resistance transporters that remained to be described. The work has implications for ntibiotic-resistant strains of bacteria, as well as for developing hardy strains of agricultural crops.
Read More
Virus silencer
Date: Sep 15, 2010
Author: David Bradley
US researchers have used Berkeley Lab's Advanced Light Source to obtain a crystal structure of the endoribonuclease enzyme known as Csy4. The enzyme is present in prokaryotes and initiates the production of small RNA molecules that target and silence invading viruses and plasmids.
Read More
Chemical analysis of argon-oxygen decarburization slags in stainless steelmaking process by X-ray fluorescence spectrometry
Date: Sep 13, 2010
Author:
A quantitative analysis method for fluorine in slags produced in the stainless argon-oxygen decarburization process by X-ray spectrometry was proposed employing direct analysis of pressed pellets.
Read More
Turning a new magnetic leaf
Date: Sep 1, 2010
Author: David Bradley
Researchers have used a leaf as a template to produce a complex, hierarchical structure from the magnetic and conductive material iron carbide. X-ray powder diffraction allowed them to reveal how the biological template was able to create an intricate vascular structure in a ceramic product.
Read More
Kicking around solar cell materials
Date: Aug 15, 2010
Author: David Bradley
Sheffield's David Lidzey working with Athene Donald of the University of Cambridge and experts from Cardiff University and Nick Terrill at the Diamond Light Source, the UK's synchrotron facility in Didcot, have investigated the structure of solar cell materials to help them improve photovoltaic efficiencies.
Read More
Calculation of effective penetration depth in X-ray diffraction for pharmaceutical solids
Date: Aug 9, 2010
Author:
A method has been developed to define X-ray penetration depth based on the signal detection limits of the X-ray diffractometer and empirically verified using bilayer compacts of varying known thicknesses of mannitol and lactose.
Read More
Crystallography squared organically
Date: Aug 1, 2010
Author: David Bradley
Cyclobutadiene (CBD), the smallest cyclic hydrocarbon having alternating double bonds has finally succumbed to X-ray crystallography at least in terms of the determination of an immobilized derivative of the compound.
Read More
Herpes invasion
Date: Jul 15, 2010
Author: David Bradley
Herpes viruses cause several incurable diseases. They infect cells by fusing viral and cellular membranes. Now, X-ray studies have revealed the unusual structure of a key protein complex that allows a herpes virus to invade cells.
Read More
Structure of full-length class I chitinase from rice revealed by X-ray crystallography and small-angle X-ray scattering
Date: Jul 12, 2010
Author:
As an initial step toward elucidating the mechanism of hydrolytic action and antifungal activity, the full-length structure of the rice class I chitinase OsChia1b was analyzed by X-ray crystallography and small-angle X-ray scattering.
Read More
Life on earth is plausible
Date: Jul 1, 2010
Author: David Bradley
A 2009 explanation for how the building blocks of life could have been activated now has new crystallographic evidence to support the emergence of the RNA world 4 billion years ago.
Read More
