Watching complex molecules at work

ScienceDaily | 1/14/2020 | Staff
jenny1246jenny1246 (Posted by) Level 3
Now a team headed by Dr. Ulrich Schade (HZB) and Dr. Eglof Ritter (Humboldt-Universität zu Berlin) at the IRIS beamline of BESSY II has developed a new instrument that can detect these kinds of very fast and/or irreversible reactions with a single measurement. The time resolution is a few microseconds. The instrument, a Féry spectrometer, uses a highly sensitive detector known as a focal-plane detector array and special optics to make optimal use of the brilliant infrared radiation of the BESSY II synchrotron source. The team used this device to observe activation of rhodopsin under near-in vivo conditions for the first time.

"We used rhodopsin because it irreversibly decays after being excited by light and is therefore a real acid test for the system," explains Ritter, first author of the study. Rhodopsin is a protein molecule that acts as a receptor and is...
(Excerpt) Read more at: ScienceDaily
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