Výsledky vyhledávání - "Jessica Rumfeldt"

Site-by-site tracking of signal transduction in an azidophenylalanine-labeled bacteriophytochrome with step-scan FTIR spectroscopy

Autor: Heikki Häkkänen, Brigitte Stucki-Buchli, Heikki Takala, Lea Schroeder, Janne A. Ihalainen, Tilman Kottke, Alli Liukkonen, Jessica Rumfeldt, Moona Kurttila

Publikováno v: Physical Chemistry Chemical Physics. 23:5615-5628

Signal propagation in photosensory proteins is a complex and multidimensional event. Unraveling such mechanisms site-specifically in real time is an eligible but a challenging goal. Here, we elucidate the site-specific events in a red-light sensing p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efbec1f063e33d4209b287b62d8cb122
https://doi.org/10.1039/d0cp06553f

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The structural effect between the output module and chromophore-binding domain is a two-way street via the hairpin extension

Autor: Moona Kurttila, Stefan Etzl, Jessica Rumfeldt, Heikki Takala, Nadine Galler, Andreas Winkler, Janne A. Ihalainen

Publikováno v: Photochemicalphotobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology. 21(11)

Signal transduction typically starts with either ligand binding or cofactor activation, eventually affecting biological activities in the cell. In red light-sensing phytochromes, isomerization of the bilin chromophore results in regulation of the act

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea4874316969fe231d22d478f80510aa
https://pubmed.ncbi.nlm.nih.gov/35984631

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Conserved histidine and tyrosine determine spectral responses through the water network in Deinococcus radiodurans phytochrome

Autor: Heli Lehtivuori, Jessica Rumfeldt, Satu Mustalahti, Sami Kurkinen, Heikki Takala

Funding Information: This work was supported by Academy of Finland grants 285461 (H.T.), 330678 (H.T., J.R.), 277194 (H.L.), and 290677 (S.M.). We acknowledge the European Synchrotron Radiation Facility (ESRF) for providing synchrotron access for cry

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab42ac2411e42307836239970bcb9085
https://trepo.tuni.fi/handle/10024/141732

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The hairpin extension controls solvent access to the chromophore binding pocket in a bacterial phytochrome: a UV-vis absorption spectroscopy study

Autor: Heikki Takala, Moona Kurttila, Jessica Rumfeldt, Janne A. Ihalainen

Publikováno v: Photochemicalphotobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology. 20(9)

Solvent access to the protein interior plays an important role in the function of many proteins. Phytochromes contain a specific structural feature, a hairpin extension that appears to relay structural information from the chromophore to the rest of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7a5bf8145df4ea06ac9237d50aea85a
https://pubmed.ncbi.nlm.nih.gov/34460093

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Coordination of the biliverdin D-ring in bacteriophytochromes

Autor: Ivan Peshev, Heikki Häkkänen, Jessica Rumfeldt, Petra Edlund, Heikki Takala, Janne A. Ihalainen, Nils Lenngren, Brigitte Stucki-Buchli, Sebastian Westenhoff

Publikováno v: Physical Chemistry Chemical Physics

Phytochrome proteins translate light into biochemical signals in plants, fungi and microorganisms. Light cues are absorbed by a bilin chromophore, leading to an isomerization and a rotation of the D-ring. This relays the signal to the protein matrix.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::393772643be2c6188b0f7605f6e3f1fd
https://pubmed.ncbi.nlm.nih.gov/29938729

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