Together with colleagues from the USA, scientists from the University of Bonn and the research institute Caesar in Bonn have used nanostructures to construct a tiny machine that constitutes a rotatory motor and can move in a specific direction. The researchers used circular structures from DNA. The results will now be presented in the journal “Nature Nanotechnology”.
Nanomachines include structures of complex proteins and nucleic acids that are powered with chemical energy and can perform directed movements. The principle...10.04.2018 | Life Sciences | Read more
For navigation, sperm use musical tricks. Similar to a guitar string, sperm beat their tail with two different frequencies or “notes”. Scientists from the research center caesar in Bonn, associated with the Max Planck Society, and the Helmholtz research center Jülich published these findings in a recent article in Nature Communications.
It is a matter of scientific debate how microswimmers navigate. This fundamental question concerns scientists seeking to understand biological microswimmers,...13.11.2017 | Life Sciences | Read more
Scientists of the Research Center caesar in Bonn, an Institute of the Max Planck Society, developed a new biosensor, which allows to measure nanomolar levels of the second messenger cAMP. The sensor makes it possible to study cAMP signaling with high precision, even in subcellular compartments. Using this new biosensor, the scientists of the Minerva Max Planck Research Group “Molecular Physiology“ headed by Dagmar Wachten and of the Department “Molecular Sensory Systems” headed by Benjamin Kaupp revealed how the production of cAMP is regulated in the flagella of sperm cells from mice.
Cells can change the way they grow, move, or develop in response to stimuli from their environment. This information is first detected at the surface of the...22.03.2016 | Life Sciences | Read more
Superficial cortical interneurons decrease trial-to-trial variability in pyramidal neuron responses to sensory input
Scientists at the research center caesar in Bonn have, in cooperation with the Bernstein Center for Computational Neuroscience, the Max Planck Institute for...16.11.2015 | Life Sciences | Read more
Scientists from the Center of Advanced European Studies and Research (caesar), an Institute of the Max Planck Society, discovered the principles of how sea urchin sperm navigate in their natural three-dimensional environment. Using photonic techniques, the scientists created chemical “landscapes” of the egg’s chemoattractant and thus identified the cellular signaling events that control the steering motion of the sperm tail.
For reproduction, sea urchins release their eggs and sperm into the vast ocean. There, sperm are facing the difficult task to find an egg, which is only a...20.08.2015 | Life Sciences | Read more
Biological pigment aligns in double rows
Scientists from the caesar research center, an Institute of the Max Planck Society, have explained, with the help of electron microscopy, how the pigment...03.03.2015 | Life Sciences | Read more
Ultraviolet filters, preservatives, and plasticizers may be responsible for fertility problems
A plethora of endocrine-disrupting chemicals interfere with human sperm function in a way that may have a negative impact on fertilization. These are the...13.05.2014 | Health and Medicine | Read more
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