Small regulatory RNA molecules are vital for salmonella and other bacteria potentially harmful to humans: This RNA type controls gene activity and allows bacteria to quickly adjust to changing conditions of living and stress as are typical during an infection, for example, when entering the blood stream or inside human cells.
Professor Jörg Vogel, head of the Institute for Molecular Infection Biology of the Julius-Maximilians-Universität Würzburg (JMU) in Bavaria, Germany, is a pioneer in researching small regulatory RNA molecules. He and his team are determined to get to the bottom of how these molecules work and act. His works could also show new ways to fight pathogens.
ProQ binds nearly 100 regulatory RNAs
New findings from Vogel's team have now been published in the journal PNAS: So far, two proteins (Hfg and CsrA) have been known to bind closely to the bacteria's regulatory RNA molecules and influence their activities. Using a new self-designed method, the Würzburg team has now discovered a long-suspected third protein (ProQ) whose function inside the cell has been unknown until recently.
Experiments showed that the ProQ protein binds to 98 regulatory RNAs of the enterobacterial Salmonella enterica. The bacterium has been found to have around 300 such RNAs in total. Moreover, ProQ seems to have specialised in RNA molecules with a rather complex structure.
This protein and the RNA molecules that bind to it represent a largely unresearched class of gene activity regulators in the bacterial "RNA universe". "It will be particularly exciting to find out how ProQ is able to pinpoint the highly structured RNAs among millions of other RNA molecules in a cell," says Jörg Vogel.
PNAS considers results significant
These results have been reported in PNAS by the Würzburg professor together with Alexandre Smirnov, Konrad Förstner, Erik Holmqvist and Regina Günster as well as colleagues from Greifswald and Cologne. Considered highly significant for bacterial research, the new findings are featured in the journal's "Research Highlight" section.
A new technique developed by the JMU team has successfully tracked down the activities of the ProQ protein. "The methods available so far were subject to certain limits with regard to detecting and generally classifying RNA protein interactions which we have overcome here," Professor Vogel further. Since the new method can basically be applied to any other organism, it is expected to provide more progress in researching regulatory RNA.
Dr. Jörg Vogel | EurekAlert!
Cryo-electron microscopy achieves unprecedented resolution using new computational methods
24.03.2017 | DOE/Lawrence Berkeley National Laboratory
How cheetahs stay fit and healthy
24.03.2017 | Forschungsverbund Berlin e.V.
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
24.03.2017 | Materials Sciences
24.03.2017 | Physics and Astronomy
24.03.2017 | Physics and Astronomy