Initial Characterization of the Primary Photochemistry of AppA, a Blue-light–using Flavin Adenine Dinucleotide–domain Containing Transcriptional Antirepressor Protein from Rhodobacter sphaeroides: A Key Role for Reversible Intramolecular Proton Transfer from the Flavin Adenine Dinucleotide Chromophore to a Conserved Tyrosine?¶

2003 ◽  
Vol 78 (3) ◽  
pp. 290 ◽  
Author(s):  
Wouter Laan ◽  
Michael A. van der Horst ◽  
Ivo H. van Stokkum ◽  
Klaas J. Hellingwerf
Keyword(s):  
Proton Transfer ◽  
Blue Light ◽  
Rhodobacter Sphaeroides ◽  
Flavin Adenine Dinucleotide ◽  
Intramolecular Proton Transfer ◽  
Initial Characterization ◽  
Primary Photochemistry ◽  
Conserved Tyrosine

scholarly journals Novel Riboflavin-Inspired Conjugated Bio-Organic Semiconductors

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2271 ◽  
Author(s):  
Jan Richtar ◽  
Patricie Heinrichova ◽  
Dogukan Apaydin ◽  
Veronika Schmiedova ◽  
Cigdem Yumusak ◽  
...  
Keyword(s):  
Proton Transfer ◽  
Organic Semiconductors ◽  
Intramolecular Proton Transfer ◽  
Fine Tuning ◽  
Conjugated Materials ◽  
Absorption And Emission ◽  
Application Potential ◽  
Synthetic Approaches ◽  
Comprehensive Characterization

Flavins are known to be extremely versatile, thus enabling routes to innumerable modifications in order to obtain desired properties. Thus, in the present paper, the group of bio-inspired conjugated materials based on the alloxazine core is synthetized using two efficient novel synthetic approaches providing relatively high reaction yields. The comprehensive characterization of the materials, in order to evaluate the properties and application potential, has shown that the modification of the initial alloxazine core with aromatic substituents allows fine tuning of the optical bandgap, position of electronic orbitals, absorption and emission properties. Interestingly, the compounds possess multichromophoric behavior, which is assumed to be the results of an intramolecular proton transfer.

scholarly journals Purification and Initial Characterization of a Putative Blue Light Regulated Phosphodiesterase from Escherichia coli

2004 ◽  
Author(s):  
Sudarshan Rajagopal ◽  
Jason M. Key ◽  
Erin B. Purcell ◽  
David J. Boerema ◽  
Keith Moffat
Keyword(s):  
Escherichia Coli ◽  
Blue Light ◽  
Initial Characterization

scholarly journals In Vivo Sensitivity of Blue-Light-Dependent Signaling Mediated by AppA/PpsR or PrrB/PrrA in Rhodobacter sphaeroides

2009 ◽  
Vol 191 (13) ◽  
pp. 4473-4477 ◽  
Author(s):  
Sebastian Metz ◽  
Andreas Jäger ◽  
Gabriele Klug
Keyword(s):  
Blue Light ◽  
Rhodobacter Sphaeroides ◽  
Flavin Adenine Dinucleotide ◽  
The Other ◽  
Dependent Manner ◽  
Bluf Domain ◽  
The One

ABSTRACT Formation of photosynthesis complexes in Rhodobacter sphaeroides is regulated in a redox- and light-dependent manner by the AppA/PpsR and PrrB/PrrA systems. While on the one hand, blue light is sensed by the flavin adenine dinucleotide-binding BLUF domain of AppA, on the other, light is absorbed by bacteriochlorophyll signals through PrrB/PrrA. We show that much smaller quantities initiate the AppA-mediated response to blue light than the bacteriochlorophyll-mediated response.

scholarly journals Initial characterization of site-directed mutants of tyrosine M210 in the reaction centre of Rhodobacter sphaeroides.

1990 ◽  
Vol 9 (7) ◽  
pp. 2061-2070 ◽  
Author(s):  
K. A. Gray ◽  
J. W. Farchaus ◽  
J. Wachtveitl ◽  
J. Breton ◽  
D. Oesterhelt
Keyword(s):  
Rhodobacter Sphaeroides ◽  
Reaction Centre ◽  
Initial Characterization

Purification and Initial Characterization of a Putative Blue Light–regulated Phosphodiesterase from Escherichia coli¶

2004 ◽  
Vol 80 (3) ◽  
pp. 542 ◽  
Author(s):  
Sudarshan Rajagopal ◽  
Jason M. Key ◽  
Erin B. Purcell ◽  
David J. Boerema ◽  
Keith Moffat
Keyword(s):  
Escherichia Coli ◽  
Blue Light ◽  
Initial Characterization
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