Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Karsten Heyne"'
Autor:
Gabriela Nass Kovacs, Jacques-Philippe Colletier, Marie Luise Grünbein, Yang Yang, Till Stensitzki, Alexander Batyuk, Sergio Carbajo, R. Bruce Doak, David Ehrenberg, Lutz Foucar, Raphael Gasper, Alexander Gorel, Mario Hilpert, Marco Kloos, Jason E. Koglin, Jochen Reinstein, Christopher M. Roome, Ramona Schlesinger, Matthew Seaberg, Robert L. Shoeman, Miriam Stricker, Sébastien Boutet, Stefan Haacke, Joachim Heberle, Karsten Heyne, Tatiana Domratcheva, Thomas R. M. Barends, Ilme Schlichting
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-17 (2019)
Bacteriorhodopsin (bR) is a light-driven proton pump. Here the authors combine time-resolved crystallography at a free-electron laser, ultrafast spectroscopy and quantum chemistry to study the structural changes following multiphoton photoexcitation
Externí odkaz:
https://doaj.org/article/a086ef8dd24c43efbb5f1448e1c960cf
Publikováno v:
Photonics, Vol 9, Iss 7, p 465 (2022)
A non-invasive CO2 gas temperature sensing technique at or close to the room temperature range based on quantum cascade laser absorption spectroscopy is presented. The method probes thermally populated ground state and hot-band rotational-vibrational
Externí odkaz:
https://doaj.org/article/6069494a31b44e7192da4ae580c7b5e3
Autor:
Frank Herklotz, Tom Rubin, Malte Sinnreich, Alexander Helmke, Theodore von Haimberger, Karsten Heyne
Publikováno v:
Applied Sciences, Vol 12, Iss 10, p 5057 (2022)
A quantum cascade laser-based sensing technique is presented which allows for in situ high-precision temperature and/or CO2 concentration measurements of gases in the room temperature regime with sampling rates up to about 40 kHz. The method is based
Externí odkaz:
https://doaj.org/article/f617d5aafa6d47d3bdb45c4a396b6958
Publikováno v:
Molecules, Vol 25, Iss 4, p 848 (2020)
Channelrhodopsins (ChR) are light-gated ion-channels heavily used in optogenetics. Upon light excitation an ultrafast all-trans to 13-cis isomerization of the retinal chromophore takes place. It is still uncertain by what means this reaction leads to
Externí odkaz:
https://doaj.org/article/9f87733b4fb843b6ab98aff200e3f920
Autor:
Clark Zahn, Till Stensitzki, Mario Gerecke, Alexander Berg, Atif Mahammed, Zeev Gross, Karsten Heyne
Publikováno v:
Molecules, Vol 22, Iss 7, p 1174 (2017)
Corroles are a developing class of tetrapyrrole-based molecules with significant chemical potential and relatively unexplored photophysical properties. We combined femtosecond broadband fluorescence up-conversion and fs broadband Vis-pump Vis-probe s
Externí odkaz:
https://doaj.org/article/0033a3717b7a468f8e5ac3947dc7f27c
Autor:
Yang Yang, Martin Linke, Theodore von Haimberger, Ricardo Matute, Leticia González, Peter Schmieder, Karsten Heyne
Publikováno v:
Structural Dynamics, Vol 1, Iss 1, Pp 014701-014701-12 (2014)
Photoisomerization of a protein bound chromophore is the basis of light sensing of many photoreceptors. We tracked Z-to-E photoisomerization of Cph1 phytochrome chromophore PCB in the Pr form in real-time. Two different phycocyanobilin (PCB) groun
Externí odkaz:
https://doaj.org/article/1fae9d93226e414aa41d9d182b015eb1
Autor:
Tom Rubin, Theodore von Haimberger, Alexander Helmke, Johan Lock, Martin Stockmann, Karsten Heyne
Publikováno v:
Photonics, Vol 3, Iss 2, p 31 (2016)
The actual metabolic capacity of the liver is crucial for disease identification, liver therapy, and liver tumor resection. By combining induced drug metabolism and high sensitivity IR spectroscopy of exhaled air, we provide a method for quantitative
Externí odkaz:
https://doaj.org/article/530d7594e5ca44399adcdf3913868960
Autor:
Yang Yang, Till Stensitzki, Christina Lang, Jon Hughes, Maria Andrea Mroginski, Karsten Heyne
Publikováno v:
Photochemical & Photobiological Sciences. 22:919-930
Photoisomerization is a fundamental process in several classes of photoreceptors. Phytochromes sense red and far-red light in their Pr and Pfr states, respectively. Upon light absorption, these states react via individual photoreactions to the other
Publikováno v:
Chemical science. 13(42)
Chlorophyll
Autor:
Till Stensitzki, Anh Duc Nguyen, David Buhrke, Andrea Schmidt, Francisco Velazquez Escobar, Yang Yang, Suliman Adam, Patrick Scheerer, Friedrich Siebert, Karsten Heyne, Norbert Michael, Igor Schapiro, Patrick Piwowarski, Luisa Sauthof, Jan Goerling, Maria Fernandez Lopez, Anastasia Kraskov, Maria Andrea Mroginski, Franz Bartl, Peter Hildebrandt
Publikováno v:
Biochemistry. 59:1023-1037
Phytochromes are biological photoswitches that interconvert between two parent states (Pr and Pfr). The transformation is initiated by photoisomerization of the tetrapyrrole chromophore, followed by a sequence of chromophore and protein structural ch