scholarly journals Effect of point mutations on the ultrafast photo-isomerization of Anabaena sensory rhodopsin

2018 ◽  
Vol 207 ◽  
pp. 55-75 ◽  
Author(s):  
D. Agathangelou ◽  
Y. Orozco-Gonzalez ◽  
M. del Carmen Marín ◽  
P. P. Roy ◽  
J. Brazard ◽  
...  
Keyword(s):  
Excited State ◽  
Point Mutations ◽  
Sensory Rhodopsin ◽  
Retinal Protein

Tuning excited state potentials and dynamics of a retinal protein through point mutations.

scholarly journals Mapping the ultrafast vibrational dynamics of all-trans and 13-Cis retinal isomerization in Anabaena Sensory Rhodopsin

2019 ◽  
Vol 205 ◽  
pp. 10001
Author(s):  
Partha Pratim Roy ◽  
Rei Youshizumi ◽  
Hideki Kandori ◽  
Tiago Buckup
Keyword(s):  
Excited State ◽  
Frequency Shift ◽  
Vibrational Spectroscopy ◽  
Vibrational Modes ◽  
Sensory Rhodopsin ◽  
Vibrational Dynamics ◽  
State Evolution ◽  
Shift Dynamics

The ground and excited state evolution of fingerprint vibrational modes of all-trans-and 13-cis-retinal are mapped by impulsive vibrational spectroscopy. All-trans-retinal shows slower frequency shift dynamics in the excited state in comparison to 13-cis-retinal.

scholarly journals Anabaena Sensory Rhodopsin: Effect of point mutations on PSBR photo-isomerization speed

2019 ◽  
Vol 205 ◽  
pp. 10004
Author(s):  
Damianos Agathangelou ◽  
Yoelvis Orozco-Gonzalez ◽  
Marí del Carmen Marin Pérez ◽  
Johanna Brazard ◽  
Hideki Kandori ◽  
...  
Keyword(s):  
Point Mutations ◽  
Low Frequency ◽  
Ground States ◽  
Fold Increase ◽  
Experimental Results ◽  
Sensory Rhodopsin ◽  
Retinal Proteins

We report new experimental results on the ultrafast photo-isomerization of ASR - PSBR where, unlike other retinal proteins, point mutations lead to a 2-fold increase of the photo-isomerization speed for the all-trans isomer. Prominent low-frequency vibrational coherences are reported for both the excited and photo-product ground states.

Subpicosecond transient absorption spectrum of the excited state of a retinal protein, halorhodopsin

1991 ◽  
Vol 187 (6) ◽  
pp. 579-582 ◽  
Author(s):  
Hideki Kandori ◽  
Keitaro Yoshihara ◽  
Hiroaki Tomioka ◽  
Hiroyuki Sasabe
Keyword(s):  
Absorption Spectrum ◽  
Excited State ◽  
Transient Absorption ◽  
Transient Absorption Spectrum ◽  
Retinal Protein

Renilla Bioluminescence: A Morphologic Approach to the Location of Photocytes

1974 ◽  
Vol 32 ◽  
pp. 208-209
Author(s):  
Ben O. Spurlock ◽  
Milton J. Cormier
Keyword(s):  
Excited State ◽  
Ground State ◽  
Molecular Basis ◽  
Light Emission ◽  
Chemical Basis ◽  
Electronic Excited State ◽  
Colonial Form ◽  
The Common ◽  
Eighteenth And Nineteenth Centuries ◽  
Catalyzed Oxidation

The phenomenon of bioluminescence has fascinated layman and scientist alike for many centuries. During the eighteenth and nineteenth centuries a number of observations were reported on the physiology of bioluminescence in Renilla, the common sea pansy. More recently biochemists have directed their attention to the molecular basis of luminosity in this colonial form. These studies have centered primarily on defining the chemical basis for bioluminescence and its control. It is now established that bioluminescence in Renilla arises due to the luciferase-catalyzed oxidation of luciferin. This results in the creation of a product (oxyluciferin) in an electronic excited state. The transition of oxyluciferin from its excited state to the ground state leads to light emission.

Integration of Core-Edge Spectroscopy Methods for the Study of Polymers

1996 ◽  
Vol 54 ◽  
pp. 154-155
Author(s):  
E. G. Rightor
Keyword(s):  
Excited State ◽  
Polymer Blends ◽  
Gas Phase ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Electronic States ◽  
Core Electron ◽  
Bulk Solids ◽  
Development Application

Core edge spectroscopy methods are versatile tools for investigating a wide variety of materials. They can be used to probe the electronic states of materials in bulk solids, on surfaces, or in the gas phase. This family of methods involves promoting an inner shell (core) electron to an excited state and recording either the primary excitation or secondary decay of the excited state. The techniques are complimentary and have different strengths and limitations for studying challenging aspects of materials. The need to identify components in polymers or polymer blends at high spatial resolution has driven development, application, and integration of results from several of these methods.

Examining the degradation of environmentally-daunting per- and poly-fluoroalkyl substances from a fundamental chemical perspective

2020 ◽  
Vol 22 (31) ◽  
pp. 17659-17667 ◽  
Author(s):  
Antonio H. da S. Filho ◽  
Gabriel L. C. de Souza
Keyword(s):  
Excited State

In this work, ground and excited-state properties were used as descriptors for probing mechanisms as well as to assess potential alternatives for tackling the elimination of per- and poly-fluoroalkyl substances (PFAS).

Dynamic adjustment of emission from both singlets and triplets: the role of excited state conformation relaxation and charge transfer in phenothiazine derivates

2021 ◽  
Author(s):  
Weidong Qiu ◽  
Xinyi Cai ◽  
Mengke Li ◽  
Liangying Wang ◽  
Yanmei He ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Dynamic Adjustment ◽  
Twisted Intramolecular Charge Transfer

Dynamic adjustment of emission behaviours by controlling the extent of twisted intramolecular charge transfer character in excited state.

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