Prof. Eugene “Gene” Myers, one of the pioneers in bioinformatics, is affiliated with the group as a mentor. Together with his laboratory at the Max Planck Center for Systems Biology in Dresden, the junior group will decipher and compare the genetic codes of several flatworm species.
Flatworms are masters of regeneration, and are, therefore, interesting for scientists: If they are cut in two pieces, each half will develop into a new worm. By comparing the genetic material, researchers hope to gain new insights into regeneration of tissue that could have a huge impact on medicine.A new junior research group for Computational Biology (CBI) has been established at Heidelberg Institute for Theoretical Studies (HITS). It complements the work of the other six research groups, which carry out basic research in different fields of science. The focus lies on the processing and structuring of large data volumes. The leader of the new group is Dr. Siegfried Schloissnig, a 33-year-old Computer Scientist with a Doctorate in Human Biology, who previously worked as a PostDoc at the European Molecular Biology Laboratory (EMBL). A PostDoc and two PhD students will work under his leadership in Heidelberg.
New approaches to the de novo assemblyThe new junior research group at HITS will also work on these objectives in collaboration with Gene Myers’ laboratory in Dresden and the recently established Dresden Genome Center. Together with his group, Siegfried Schloissnig will develop new approaches to the so-called de novo assembly, which is the reconstruction of genome sequences by means of DNA sequencers and bioinformatic methods. In the course of sequencing by standard methods, DNA is copied multiple times. These copies are randomly split up into numerous small fragments. These fragments are examined for overlaps by means of bioinformatic methods and are subsequently reassembled. The smaller the fragments and the more complex the genome of interest, the more complicated is the problem. The situation becomes even more difficult, when no comparable genome is available and researchers have to assemble the genome de novo, i.e. anew. This is exactly the case with flatworms, whose genetic codes the HITS junior group plans to decipher.
Dr. Peter Saueressig | idw
Rainbow colors reveal cell history: Uncovering β-cell heterogeneity
22.09.2017 | DFG-Forschungszentrum für Regenerative Therapien TU Dresden
The pyrenoid is a carbon-fixing liquid droplet
22.09.2017 | Max-Planck-Institut für Biochemie
Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.
A warming planet
Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.
The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.
Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...
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22.09.2017 | Medical Engineering
22.09.2017 | Physics and Astronomy