Changes of Low-Frequency Vibrational Modes Induced by Universal15N- and13C-Isotope Labeling in S2/S1FTIR Difference Spectrum of Oxygen-Evolving Complex†

Biochemistry ◽  
2003 ◽  
Vol 42 (45) ◽  
pp. 13170-13177 ◽  
Author(s):  
Yukihiro Kimura ◽  
Naoki Mizusawa ◽  
Asako Ishii ◽  
Toshihiro Yamanari ◽  
Taka-aki Ono
Keyword(s):  
Isotope Labeling ◽  
Low Frequency ◽  
Difference Spectrum ◽  
Oxygen Evolving Complex ◽  
Vibrational Modes ◽  
Oxygen Evolving

Low-Frequency Resonance Raman Characterization of the Oxygen-Evolving Complex of Photosystem II

2000 ◽  
Vol 122 (9) ◽  
pp. 2069-2077 ◽  
Author(s):  
Agnes Cua ◽  
David H. Stewart ◽  
Michael J. Reifler ◽  
Gary W. Brudvig ◽  
David F. Bocian
Keyword(s):  
Photosystem Ii ◽  
Resonance Raman ◽  
Low Frequency ◽  
Oxygen Evolving Complex ◽  
Frequency Resonance ◽  
Oxygen Evolving ◽  
Raman Characterization

scholarly journals Structural Changes in the Acceptor Site of Photosystem II upon Ca2+/Sr2+ Exchange in the Mn4CaO5 Cluster Site and the Possible Long-Range Interactions

Biomolecules ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 371
Author(s):  
Koua
Keyword(s):  
Crystal Structure ◽  
Photosystem Ii ◽  
Long Range ◽  
Electron Acceptor ◽  
Structural Changes ◽  
Acceptor Site ◽  
Oxygen Evolving Complex ◽  
Long Range Interactions ◽  
Structural Perturbations ◽  
Oxygen Evolving

The Mn4CaO5 cluster site in the oxygen-evolving complex (OEC) of photosystem II (PSII) undergoes structural perturbations, such as those induced by Ca2+/Sr2+ exchanges or Ca/Mn removal. These changes have been known to induce long-range positive shifts (between +30 and +150 mV) in the redox potential of the primary quinone electron acceptor plastoquinone A (QA), which is located 40 Å from the OEC. To further investigate these effects, we reanalyzed the crystal structure of Sr-PSII resolved at 2.1 Å and compared it with the native Ca-PSII resolved at 1.9 Å. Here, we focus on the acceptor site and report the possible long-range interactions between the donor, Mn4Ca(Sr)O5 cluster, and acceptor sites.

scholarly journals Low frequency vibrational modes of oxygenated myoglobin, hemoglobins, and modified derivatives.

1994 ◽  
Vol 269 (49) ◽  
pp. 31047-31050
Author(s):  
S Jeyarajah ◽  
L M Proniewicz ◽  
H Bronder ◽  
J R Kincaid
Keyword(s):  
Low Frequency ◽  
Vibrational Modes
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