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TB or not TB: Efflux X-rayed

Date: Sep 1, 2012

Author: David Bradley

Edward Yu's team at Iowa State University have taken another step forward in our understanding of this pressing issue by using crystallography to reveal the structure of a protein regulator that controls the expression of the multidrug efflux pump in Mycobacterium tuberculosis.

Read More thumbnail image: TB or not TB Efflux X-rayed

CheMin: Martian Mineralogy

Date: Aug 15, 2012

Author: David Bradley

Rocks are important. The ground beneath our feet, and all that…but on another horizon it is the chemistry of Martian rocks that are the focus of the CheMin system aboard NASA's recently landed Curiosity vehicle. The principal investigator NASA Ames Research Center heading the studies is David Blake.

Read More thumbnail image: CheMin Martian Mineralogy

Journal Highlight: Parametric X-ray radiation as a novel source for X-ray imaging

Date: Aug 13, 2012

Author: spectroscopyNOW

A novel X-ray source based on parametric X-ray radiation and constructed from an irradiated single crystal has been demonstrated in phase-contrast imaging experiments.

Read More thumbnail image: Journal Highlight Parametric X-ray radiation as a novel source for X-ray imaging

X-ray batteries: Extra charges

Date: Aug 1, 2012

Author: David Bradley

US researchers have used X-ray diffraction and transmission X-ray microscopy to take a closer look at how lithium-sulfur batteries operate. Their observations might facilitate improvements in these short-lived devices and give a much-needed boost to electric vehicles.

Read More thumbnail image: X-ray batteries Extra charges

Keep going: Fuel cells

Date: Jul 15, 2012

Author: David Bradley

X-ray photoelectron spectroscopy has been used to verify the science underpinning a fuel cell that keeps going even after the hydrogen runs out.

Read More thumbnail image: Keep going Fuel cells

Journal Highlight: Quantitative analysis of FeMo alloys using lithium tetraborate fusion technique by X-ray fluorescence spectrometry

Date: Jul 9, 2012

Author: spectroscopyNOW

An automated quantitative method for molybdenum in FeMo alloys by X-ray spectrometry that uses a borate fusion technique can replace the conventional labor-intensive and time-consuming procedure.

Read More thumbnail image: Journal Highlight Quantitative analysis of FeMo alloys using lithium tetraborate fusion technique by X-ray fluorescence spectrometry

Crystallised scorpion: Empirical emperor

Date: Jul 1, 2012

Author: David Bradley

The first successful crystallization and X-ray diffraction study of the enormous oxygen-transport protein, hemocyanin, from the emperor scorpion, have been carried out.

Read More thumbnail image: Crystallised scorpion Empirical emperor

Protein millennium: 1000 structures by XRD and NMR

Date: Jun 15, 2012

Author: David Bradley

An interdisciplinary study hinging on X-ray crystallography and nuclear magnetic resonance studies has examined 1000 proteins from more than 40 different human pathogens, including those responsible for plague, anthrax, salmonella, cholera, tuberculosis, leprosy, amoebic dysentery and influenza.

Read More thumbnail image: Protein millennium 1000 structures by XRD and NMR

Journal Highlight: Advantages and limitations of X-ray and computed tomography systems for the study of the skeleton in meagre (Argyrosomus regius)

Date: Jun 11, 2012

Author: spectroscopyNOW

The skeleton of a meagre (Argyrosomus regius) was examined by means of standard X-rays and computerized X-ray tomography and both imaging methods were compared.

Read More thumbnail image: Journal Highlight Advantages and limitations of X-ray and computed tomography systems for the study of the skeleton in meagre Argyrosomus regius

Focus on X-rays: No more data sacrifice

Date: Jun 1, 2012

Author: David Bradley

The equivalent of a new pair of spectacles has come in the form of an advanced method for analysing the so-called "discarded" X-ray data from a crystallographic study. The analytical technique could help improve structural studies on biopolymers including proteins and nucleic acids.

Read More thumbnail image: Focus on X-rays No more data sacrifice
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