The probe works like a GPS or navigation system for finding these proteins in cells. It could lead to new insights into disease processes and identify new targets for disease treatments, the researchers say. Their study is scheduled for the Sept. 18 issue of ACS Chemical Biology, a monthly journal.
Kate Carroll and colleagues note that scientists have known for years that the excess build-up of highly-reactive oxygen-containing molecules in cells can contribute to aging and possibly to disorders such as cancer and Alzheimer's disease. Scientists believe that a diet rich in antioxidants, which are abundant in fruits and vegetables, may help deter this cell-damaging process by blocking the accumulation of these molecules, also known as reactive oxygen species (ROS). But until now, scientists have lacked the proper tools to study the effects of these molecules in detail.
The researchers developed a new molecule called DAz-2, which they say functions like a tiny GPS device for quickly finding specific proteins that are affected by ROS. The molecules do this by chemically "tagging" sulfenic acid. Formed in cells, sulfenic acid indicates that a protein has undergone a type of reaction — called oxidation — caused by ROS. In lab studies using cultured cells, the scientists identified more than 190 proteins that undergo this reaction. The study may lead to better strategies for fighting the wide range of diseases that involve these excessive oxidation reactions, the researchers say.
Michael Woods | EurekAlert!
Interfacial engineering core@shell nanoparticles for active and selective direct H2O2 generation
19.09.2018 | Science China Press
Making better use of enzymes: a new research project at Jacobs University
19.09.2018 | Jacobs University Bremen gGmbH
Thin-film solar cells made of crystalline silicon are inexpensive and achieve efficiencies of a good 14 percent. However, they could do even better if their shiny surfaces reflected less light. A team led by Prof. Christiane Becker from the Helmholtz-Zentrum Berlin (HZB) has now patented a sophisticated new solution to this problem.
"It is not enough simply to bring more light into the cell," says Christiane Becker. Such surface structures can even ultimately reduce the efficiency by...
A study in the journal Bulletin of Marine Science describes a new, blood-red species of octocoral found in Panama. The species in the genus Thesea was discovered in the threatened low-light reef environment on Hannibal Bank, 60 kilometers off mainland Pacific Panama, by researchers at the Smithsonian Tropical Research Institute in Panama (STRI) and the Centro de Investigación en Ciencias del Mar y Limnología (CIMAR) at the University of Costa Rica.
Scientists established the new species, Thesea dalioi, by comparing its physical traits, such as branch thickness and the bright red colony color, with the...
Scientists have succeeded in observing the first long-distance transfer of information in a magnetic group of materials known as antiferromagnets.
An international team of researchers has mapped Nemo's genome, providing the research community with an invaluable resource to decode the response of fish to...
Graphene is considered a promising candidate for the nanoelectronics of the future. In theory, it should allow clock rates up to a thousand times faster than today’s silicon-based electronics. Scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) and the University of Duisburg-Essen (UDE), in cooperation with the Max Planck Institute for Polymer Research (MPI-P), have now shown for the first time that graphene can actually convert electronic signals with frequencies in the gigahertz range – which correspond to today’s clock rates – extremely efficiently into signals with several times higher frequency. The researchers present their results in the scientific journal “Nature”.
Graphene – an ultrathin material consisting of a single layer of interlinked carbon atoms – is considered a promising candidate for the nanoelectronics of the...
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