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Highly conserved residues Asp-197 and His-250 in Agp1 phytochrome control the proton affinity of the chromophore and Pfr formation
(American Society for Biochemistry and Molecular Biology, 2007-01-19)
The mutants H250A and D197A of Agp1 phytochrome from Agrobacterium tumefaciens were prepared and investigated by different spectroscopic and biochemical methods. Asp-197 and His-250 are highly conserved amino acids and ...
Glyphosate analysis in water samples by luminescence spectroscopy using lanthanides as chromophores
(Universidade Federal de São Paulo, 2022-03-25)
The development of techniques seeking glyphosate’s analysis by analytical methods has been broadly studied for the past years. However, many methods still require expensive resources, making them not so practical. Thus, ...
Polymerization of an epoxy resin modified with azobenzene groups monitored by near-infrared spectroscopy
(John Wiley & Sons Inc, 2009-06)
New photosensitive materials containing photochromic azobenzene moieties were synthesized. For this purpose, an epoxy resin based on diglycidyl ether of bisphenol A (DGEBA) was reacted with an azobenzene chromophore (disperse ...
The Chromophore Structures of the Pr States in Plant and Bacterial Phytochromes
(Cell Press, 2007-10)
The resonance Raman spectra of the Pr state of the N-terminal 65-kDa fragment of plant phytochrome phyA have been measured and analyzed in terms of the configuration and conformation of the tetrapyrroles methine bridges. ...
Variable vision in variable environments: The visual system of an invasive cichlid (Cichla monoculus) in Lake Gatun, Panama
(2019-01-01)
An adaptive visual system is essential for organisms inhabiting new or changing light environments. The Panama Canal exhibits such variable environments owing to its anthropogenic origin and current human activities. Within ...