Two-dimensional resonance Raman spectroscopy of oxygen- and water-ligated myoglobins

2016 ◽  
Vol 145 (3) ◽  
pp. 034203 ◽  
Author(s):  
Brian P. Molesky ◽  
Zhenkun Guo ◽  
Thomas P. Cheshire ◽  
Andrew M. Moran
2015 ◽  
Vol 143 (12) ◽  
pp. 124202 ◽  
Author(s):  
Zhenkun Guo ◽  
Brian P. Molesky ◽  
Thomas P. Cheshire ◽  
Andrew M. Moran

2016 ◽  
Vol 145 (18) ◽  
pp. 180901 ◽  
Author(s):  
Brian P. Molesky ◽  
Zhenkun Guo ◽  
Thomas P. Cheshire ◽  
Andrew M. Moran

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Bruno R. Carvalho ◽  
Yuanxi Wang ◽  
Sandro Mignuzzi ◽  
Debdulal Roy ◽  
Mauricio Terrones ◽  
...  

2008 ◽  
Vol 62 (8) ◽  
pp. 833-839 ◽  
Author(s):  
Gelu Comanescu ◽  
Charles K. Manka ◽  
Jacob Grun ◽  
Sergei Nikitin ◽  
Daniel Zabetakis

2013 ◽  
Vol 15 (44) ◽  
pp. 19457 ◽  
Author(s):  
Hao Ren ◽  
Zaizhi Lai ◽  
Jason D. Biggs ◽  
Jin Wang ◽  
Shaul Mukamel

2012 ◽  
Vol 136 (17) ◽  
pp. 174117 ◽  
Author(s):  
Jason D. Biggs ◽  
Yu Zhang ◽  
Daniel Healion ◽  
Shaul Mukamel

2021 ◽  
pp. 000370282110289
Author(s):  
Julian Hniopek ◽  
Thomas Bocklitz ◽  
Michael Schmitt ◽  
Jürgen Popp

The functionality of active centers in proteins is governed by the secondary and higher structure of proteins which often lead to structures in the active center that are different from the structures found in protein-free models of the active center. To elucidate this structure–function relationship, it is therefore necessary to investigate both the protein structure and the local structure of the active center. In this work, we investigate the application of hetero (resonance) Raman two-dimensional correlation spectroscopy (2D-COS) to this problem. By employing a combination of near-infrared-Fourier transform-Raman- and vis-resonance Raman spectroscopy, we could show that this combination of techniques is able to directly probe the structure–function relationship of proteins. We were able to correlate the transition of the heme center in cytochrome c from low to high spin with changes in the secondary structure with the above mentioned two spectroscopic in situ techniques and without sample preparation. Thereby, we were able to reveal that the combination of a spectroscopic method to selectively observe the active center with a technique that monitors the whole system offers a promising toolkit to investigate the structure–function relationship of proteins with photoactive centers in general.


1993 ◽  
Vol 47 (9) ◽  
pp. 1343-1344 ◽  
Author(s):  
Ken Ebihara ◽  
Hiroaki Takahashi ◽  
Isao Noda

Nanosecond two-dimensional resonance Raman spectroscopy was used to investigate the photochemistry of the production and decay of the radical anion of benzil in various solvents. A newly developed correlation formalism was applied to a set of time-resolved resonance Raman spectra of the benzil radical anion to generate two-dimensional Raman spectra. Unlike the 2D correlation method previously developed for IR spectroscopy, which was based on signals induced by a sinusoidally varying external perturbation, the new correlation formalism is generally applicable to the studies of any transient spectroscopic signals having an arbitrary waveform. This makes it ideally suited for the analysis of time-resolved spectroscopic signals following photoexcitation. 2D Raman spectra effectively accentuate certain useful information which is sometimes obscured in the original time-resolved spectra. Spectral intensity changes and peak shifts arising from the photochemical reaction processes were clearly observed by the synchronous and asynchronous correlation.


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