Intrinsic photoisomerization dynamics of protonated Schiff-base retinal

Autor: Hjalte V. Kiefer, Elisabeth Gruber, Jeppe Langeland, Pavel A. Kusochek, Anastasia V. Bochenkova, Lars H. Andersen

Publikováno v: Nature Communications, Vol 10, Iss 1, Pp 1-9 (2019)

The primary photoresponse of protonated Schiff-base retinal in visual and bacterial rhodopsins is fast sub-ps isomerisation. Here, the authors show that the fast photoisomerization of rhodopsin is related to an intrinsic retinal property, whereas bac

Externí odkaz: https://doaj.org/article/62bae373a5fb4f23abd5d636560ac791

The UV-visible action-absorption spectrum of all-trans and 11-cis protonated Schiff base retinal in the gas phase

Autor: Jeppe Langeland Knudsen, Anastasia V. Bochenkova, Anika Kluge, Lars H. Andersen, Hjalte V. Kiefer

Publikováno v: Knudsen, J L, Kluge, A, Bochenkova, A V, Kiefer, H V & Andersen, L H 2018, ' The UV-visible action-absorption spectrum of all-trans and 11-cis protonated Schiff base retinal in the gas phase ', Physical Chemistry Chemical Physics, vol. 20, no. 10, pp. 7190-7194 . https://doi.org/10.1039/c7cp07512j

The UV-visible absorption of retinal in its protonated Schiff-base form is studied in the gas phase. In particular, transitions to highly-excited electronic states, Sn, in the all-trans and 11-cis forms are considered, and several new states are disc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::610edde669c403760187bd441d9f1a6b
https://doi.org/10.1039/c7cp07512j

Elucidation of the intrinsic optical properties of hydrogen-bonded and protonated flavin chromophores by photodissociation action spectroscopy

Autor: Kasper Lincke, Andreas Østergaard Madsen, Louise J. Skov, Lars H. Andersen, Mogens Brøndsted Nielsen, Elisabeth Gruber, Hjalte V. Kiefer, Kurt V. Mikkelsen, Jeppe Langeland

Publikováno v: Lincke, K, Langeland, J, Madsen, A O, Kiefer, H V, Skov, L, Gruber, E, Mikkelsen, K V, Andersen, L H & Nielsen, M B 2018, ' Elucidation of the intrinsic optical properties of hydrogen-bonded and protonated flavin chromophores by photodissociation action spectroscopy ', Physical Chemistry Chemical Physics, vol. 20, no. 45, pp. 28678-28684 . https://doi.org/10.1039/c8cp05368e

A model system of the flavin chromophore was synthesized and investigated for its intrinsic optical properties by gas phase action spectroscopy using an ion storage ring. An ammonium group was anchored to this flavin chromophore to allow its transfer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8fdaae5a0ebf38ecee271350f086c66
https://pubmed.ncbi.nlm.nih.gov/30406792

Origin of the Intrinsic Fluorescence of the Green Fluorescent Protein

Autor: A. Svendsen, Lars H. Andersen, Anastasia V. Bochenkova, Hjalte V. Kiefer, Henrik B. Pedersen

Publikováno v: Svendsen, A, Kiefer, H V, Pedersen, H B, Bochenkova, A V & Andersen, L H 2017, ' Origin of the Intrinsic Fluorescence of the Green Fluorescent Protein ', Journal of the American Chemical Society, vol. 139, no. 25, pp. 8766-8771 . https://doi.org/10.1021/jacs.7b04987

Green fluorescent protein, GFP, has revolutionized biology, due to its use in bioimaging. It is widely accepted that the protein environment makes its chromophore fluoresce, whereas the fluorescence is completely lost when the native chromophore is t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4dc43a56b37ed624a5c120763c556d5f
https://pure.au.dk/portal/da/publications/origin-of-the-intrinsic-fluorescence-of-the-green-fluorescent-protein(1f9bd980-722a-4233-bd75-a731a32d893c).html

Decoupling Electronic versus Nuclear Photoresponse of Isolated Green Fluorescent Protein Chromophores Using Short Laser Pulses

Autor: Henrik B. Pedersen, Anastasia V. Bochenkova, Lars H. Andersen, Hjalte V. Kiefer

Publikováno v: Kiefer, H V, Pedersen, H B, Bochenkova, A V & Andersen, L H 2016, ' Decoupling Electronic versus Nuclear Photoresponse of Isolated Green Fluorescent Protein Chromophores Using Short Laser Pulses ', Physical Review Letters, vol. 117, no. 24, 243004 . https://doi.org/10.1103/PhysRevLett.117.243004

The photophysics of a deprotonated model chromophore for the green fluorescent protein is studied by femtosecond laser pulses in an electrostatic ion-storage ring. The laser-pulse duration is much shorter than the time for internal conversion, and, h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df5baa0f33f4ebb305aed18c20a8245b
https://pubmed.ncbi.nlm.nih.gov/28009209