نتایج جستجو برای: ionone

تعداد نتایج: 330  

Journal: :Chemistry 2016
Carl-Mikael Suomivuori Lucas Lang Dage Sundholm Ana P Gamiz-Hernandez Ville R I Kaila

Rational design of light-capturing properties requires understanding the molecular and electronic structure of chromophores in their native chemical or biological environment. We employ here large-scale quantum chemical calculations to study the light-capturing properties of retinal in recently designed human cellular retinol binding protein II (hCRBPII) variants (Wang et al. Science, 2012, 338...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2002
Mario Suwalsky Paulina Hidalgo Kazimierz Strzalka Anna Kostecka-Gugala

The interaction of structurally different carotenoids with a membrane molecular model was examined by X-ray diffraction. The selected compounds were beta-carotene, lycopene, lutein, violaxanthin, zeaxanthin, and additionally carotane, a fully saturated derivative of beta-carotene. They present similarities and differences in their rigidity, the presence of terminal ionone rings and hydroxy and ...

Journal: :Chemistry & biology 2011
Kenneth W Foster Jureepan Saranak Sonja Krane Randy L Johnson Koji Nakanishi

Attachment of retinal to opsin forms the chromophore N-retinylidene, which isomerizes during photoactivation of rhodopsins. To test whether isomerization is crucial, custom-tailored chromophores lacking the β-ionone ring and any isomerizable bonds were incorporated in vivo into the opsin of a blind mutant of the eukaryote Chlamydomonas reinhardtii. The analogs restored phototaxis with the antic...

Journal: :Science 2000
B Borhan M L Souto H Imai Y Shichida K Nakanishi

Movement of the ligand/receptor complex in rhodopsin (Rh) has been traced. Bleaching of diazoketo rhodopsin (DK-Rh) containing 11-cis-3-diazo-4-oxo-retinal yields batho-, lumi-, meta-I-, and meta-II-Rh intermediates corresponding to those of native Rh but at lower temperatures. Photoaffinity labeling of DK-Rh and these bleaching intermediates shows that the ionone ring cross-links to tryptophan...

Journal: :Fermentation 2021

In situ product recovery (ISPR), in the form of an extractive fermentation process, can increase productivity and titers sustainable production platform chemicals. To establish a guideline for development industrially relevant processes such bio-based compounds, wide screening was performed, mapping potential extensive range solvents solvent mixtures. Besides biocompatibility with Saccharomyces...

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