scholarly journals Chemical Reactivity and Spectroscopy of the Thiol Ester-Linkedp-Coumaric Acid Chromophore in the Photoactive Yellow Protein fromEctothiorhodospira halophila†

Biochemistry ◽  
1996 ◽  
Vol 35 (4) ◽  
pp. 1274-1281 ◽  
Author(s):  
Wouter D. Hoff ◽  
Bart Devreese ◽  
Roel Fokkens ◽  
Inge M. Nugteren-Roodzant ◽  
Jozef Van Beeumen ◽  
...  
Keyword(s):  
Chemical Reactivity ◽  
Photoactive Yellow Protein ◽  
Coumaric Acid ◽  
Thiol Ester

scholarly journals Ultrafast valence to non-valence excited state dynamics in a common anionic chromophore

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
James N. Bull ◽  
Cate S. Anstöter ◽  
Jan R. R. Verlet
Keyword(s):  
Excited State ◽  
Internal Conversion ◽  
Rydberg States ◽  
Bound State ◽  
Photoactive Yellow Protein ◽  
Coumaric Acid ◽  
Photoelectron Imaging ◽  
Time Resolved ◽  
Valence States

AbstractNon-valence states in neutral molecules (Rydberg states) have well-established roles and importance in photochemistry, however, considerably less is known about the role of non-valence states in photo-induced processes in anions. Here, femtosecond time-resolved photoelectron imaging is used to show that photoexcitation of the S1(ππ*) state of the methyl ester of deprotonated para-coumaric acid – a model chromophore for photoactive yellow protein (PYP) – leads to a bifurcation of the excited state wavepacket. One part remains on the S1(ππ*) state forming a twisted intermediate, whilst a second part leads to the formation of a non-valence (dipole-bound) state. Both populations eventually decay independently by vibrational autodetachment. Valence-to-non-valence internal conversion has hitherto not been observed in the intramolecular photophysics of an isolated anion, raising questions into how common such processes might be, given that many anionic chromophores have bright valence states near the detachment threshold.

scholarly journals Unraveling the similarity of the photoabsorption of deprotonated p-coumaric acid in the gas phase and within the photoactive yellow protein

2011 ◽  
Vol 13 (4) ◽  
pp. 1585-1589 ◽  
Author(s):  
Tomás Rocha-Rinza ◽  
Kristian Sneskov ◽  
Ove Christiansen ◽  
Ulf Ryde ◽  
Jacob Kongsted
Keyword(s):  
Gas Phase ◽  
Photoactive Yellow Protein ◽  
Coumaric Acid

scholarly journals Reconstitution photoactive yellow protein from apoprotein and p -coumaric acid derivatives

FEBS Letters ◽  
1995 ◽  
Vol 374 (2) ◽  
pp. 157-160 ◽  
Author(s):  
Yasushi Imamoto ◽  
Takeshi Ito ◽  
Mikio Kataoka ◽  
Fumio Tokunaga
Keyword(s):  
Photoactive Yellow Protein ◽  
Coumaric Acid

scholarly journals Solvent effects on de-excitation channels in the p-coumaric acid methyl ester anion, an analogue of the photoactive yellow protein (PYP) chromophore

2016 ◽  
Vol 18 (39) ◽  
pp. 27476-27485 ◽  
Author(s):  
Francisco F. García-Prieto ◽  
Aurora Muñoz-Losa ◽  
M. Luz Sánchez ◽  
M. Elena Martín ◽  
Manuel A. Aguilar
Keyword(s):  
Methyl Ester ◽  
Gas Phase ◽  
Environmental Effects ◽  
Solvent Effects ◽  
Water Solution ◽  
Acid Methyl Ester ◽  
Photoactive Yellow Protein ◽  
Coumaric Acid ◽  
Acid Methyl

Environmental effects on the deactivation channels of the PYP chromophore in the gas phase and water solution are compared at the CASPT2//CASSCF/cc-pVDZ level.

scholarly journals Controlling electron emission from the photoactive yellow protein chromophore by substitution at the coumaric acid group

2016 ◽  
Vol 18 (15) ◽  
pp. 10329-10336 ◽  
Author(s):  
Michael A. Parkes ◽  
Ciara Phillips ◽  
Michael J. Porter ◽  
Helen H. Fielding
Keyword(s):  
Quantum Chemistry ◽  
Electron Emission ◽  
Photoelectron Spectroscopy ◽  
Acid Group ◽  
Photoactive Yellow Protein ◽  
Coumaric Acid ◽  
Quantum Chemistry Calculations

Using photoelectron spectroscopy and quantum chemistry calculations to understand how the interactions between the PYP chromophore and its surrounding protein control its function.

Detection of Incorporation of p-Coumaric Acid into Photoactive Yellow Protein Variants in Vivo

Biochemistry ◽  
2019 ◽  
Vol 58 (23) ◽  
pp. 2682-2694 ◽  
Author(s):  
Katherine E. Brechun ◽  
Danlin Zhen ◽  
Anna Jaikaran ◽  
Vitali Borisenko ◽  
Masato Kumauchi ◽  
...  
Keyword(s):  
Photoactive Yellow Protein ◽  
Coumaric Acid ◽  
Protein Variants

scholarly journals Evidence for trans-cis isomerization of the p -coumaric acid chromophore as the photochemical basis of the photocycle of photoactive yellow protein

FEBS Letters ◽  
1996 ◽  
Vol 382 (1-2) ◽  
pp. 73-78 ◽  
Author(s):  
R Kort ◽  
H Vonk ◽  
X Xu ◽  
W.D Hoff ◽  
W Crielaard ◽  
...  
Keyword(s):  
Photoactive Yellow Protein ◽  
Coumaric Acid

Impact of Photon Absorption on the Electronic Properties ofp-Coumaric Acid Derivatives of the Photoactive Yellow Protein Chromophore

2004 ◽  
Vol 108 (16) ◽  
pp. 5138-5148 ◽  
Author(s):  
Lavanya L. Premvardhan ◽  
Francesco Buda ◽  
Michael A. van der Horst ◽  
Daniel C. Lührs ◽  
Klaas J. Hellingwerf ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Photon Absorption ◽  
Photoactive Yellow Protein ◽  
Coumaric Acid ◽  
Derivatives Of
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