Interview

Hier ist das Interview
TEST-TEXT

Interview

What are the physical limits of chemosensation in sperm?

Introtext:  Many cells probe their environment for chemical cues. Some cells respond to picomolar concentrations of neuropeptides, hormones, pheromones, or chemoattractants. At such low concentrations, cells encounter only a few molecules. The mechanistic underpinnings of single-molecule sensitivity are not known for any eukaryotic cell. Sea urchin sperm offer a unique model to unveil in quantitative terms the principles underlying chemosensation at the physical limit. Here, we discuss the mechanisms of such exquisite sensitivity and the computational operations performed by sperm during chemotactic steering. Moreover, we highlight commonalities and differences between signalling in sperm and photoreceptors and among sperm from different species.

Dr. Luis Alvarez
Wissenschaftler/in
Antje Baumgartner
Technische/r Mitarbeiter/in
Image
Felix Leitner
jobless

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PROF. DR. U. BENJAMIN KAUPP Ut varius tincidunt libero. Phasellus dolor. Maecenas vestibulum mollis diam. Pellentesque ut neque. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. In dui magna, posuere eget, vestibulum et, tempor auctor, justo.

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DR. LUIS ALVAREZ Jeder kennt den Klettverschluss, der nach dem Vorbild der Klette gestaltet wurde. Oder die Fassadenfarbe, die sich nach Art der Lotus-Blüte selbst reinigt. Weniger bekannt ist der Spinnennetz-Effekt: Um die Zerstörung ihrer Netze durch Vögel zu verhindern, nutzen Spinnen Materialien, die UV-Strahlung reflektieren. Für uns unsichtbar, nehmen Vögel dies als Hindernis wahr. Diesen Effekt kann man sich in Glasfassaden zunutze machen und die millionenfachen Kollisionen von Vögeln mit Glasflächen verhindern. Es geht aber nicht nur um innovative Produkte. Auch Prozesse und ganze Systeme können biologisch inspiriert sein.

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PROF. DR. U. BENJAMIN KAUPP Curabitur vestibulum aliquam leo. Praesent egestas neque eu enim. In hac habitasse platea dictumst. Fusce a quam. Etiam ut purus mattis mauris sodales aliquam. Curabitur nisi. Quisque malesuada placerat nisl. Nam ipsum risus, rutrum vitae, vestibulum eu, molestie vel, lacus. Sed augue ipsum, egestas nec, vestibulum et, malesuada adipiscing, dui. Vestibulum facilisis, purus nec pulvinar iaculis, ligula mi congue nunc, vitae euismod ligula urna in dolor. Mauris sollicitudin fermentum libero. Praesent nonummy mi in odio. Nunc interdum lacus sit amet orci.

DR. TIMO STRÜNKER Nam ipsum risus, rutrum vitae, vestibulum eu, molestie vel, lacus. Sed augue ipsum, egestas nec, vestibulum et, malesuada adipiscing, dui. Vestibulum facilisis, purus nec pulvinar iaculis, ligula mi congue nunc, vitae euismod ligula urna in dolor.

DR. LUIS ALVAREZ Nam ipsum risus, rutrum vitae, vestibulum eu, molestie vel, lacus. Sed augue ipsum, egestas nec, vestibulum et, malesuada adipiscing, dui. Vestibulum facilisis, purus nec pulvinar iaculis, ligula mi congue nunc, vitae euismod ligula urna in dolor. Mauris sollicitudin fermentum libero.

The Sea Urchin is also known as Echinoidea. Sea Urchins reproduce sexually. The male releases sperm into the water and the female releases million of eggs...**
The Sea Urchin is also known as Echinoidea. Sea Urchins reproduce sexually. The male releases sperm into the water and the female releases million of eggs...**

Donec elit libero, sodales nec, volutpat a, suscipit non, turpis?

DR. TIMO STRÜNKER Nam ipsum risus, rutrum vitae, vestibulum eu, molestie vel, lacus. Sed augue ipsum, egestas nec, vestibulum et, malesuada adipiscing, dui. Vestibulum facilisis, purus nec pulvinar iaculis, ligula mi congue nunc, vitae euismod ligula urna in dolor. Mauris sollicitudin fermentum libero. Praesent nonummy mi in odio. Nunc interdum lacus sit amet orci. Vestibulum rutrum, mi nec elementum vehicula, eros quam gravida nisl, id fringilla neque ante vel mi. estibulum facilisis, purus nec pulvinar iaculis, ligula mi congue nunc, vitae euismod ligula urna in dolor. Mauris sollicitudin fermentum libero. Praesent nonummy mi in odio. Nunc interdum lacus sit amet orci. Vestibulum rutrum, mi nec elementum vehicula, eros quam gravida nisl, id fringilla neque ante vel mi.