Probing the role of arginine 323 of the D1 protein in photosystem II function

2020 ◽  
Author(s):  
Miwa Sugiura ◽  
Tomonori Taniguchi ◽  
Nanami Tango ◽  
Makoto Nakamura ◽  
Julien Sellés ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
D1 Protein

scholarly journals Probing the role of Valine 185 of the D1 protein in the Photosystem II oxygen evolution

2018 ◽  
Vol 1859 (12) ◽  
pp. 1259-1273 ◽  
Author(s):  
Miwa Sugiura ◽  
Tania Tibiletti ◽  
Itsuki Takachi ◽  
Yuya Hara ◽  
Shin Kanawaku ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Oxygen Evolution ◽  
D1 Protein

Molecular Modelling of the Interactions between Optically Active Triazine Herbicides and Photosystem II

1993 ◽  
Vol 48 (5-6) ◽  
pp. 474-481 ◽  
Author(s):  
Simon P. Mackay ◽  
Patrick J. O' Malley
Keyword(s):  
Photosystem Ii ◽  
Energy Minimization ◽  
Electrostatic Interactions ◽  
D1 Protein ◽  
Optically Active ◽  
Binding Region ◽  
Intermolecular Energy ◽  
Protein Binding Region ◽  
Interactive Models

Abstract The QB binding site of photosystem II in green plants displays stereoselectivity for the (S′) stereoisomer of the α-methylbenzyl derivative of atrazine but not for derivatives with smaller substituents such as sec-butyl. We have shown that interactive models reflect the experimental data by determining the intermolecular energies between the D1 protein binding region (resi­dues Leu 210 to Val 280) and the triazine analogs. The intermolecular energy was calculated by van der Waals and electrostatic interactions after energy minimization of the combined structures to reduce inter and intramolecular strain. On the basis of these assumptions the role of stereoselectivity for optically active triazines was site responsible such stereoselectivity was identified.

Function of β-Carotene and Tocopherol in Photosystem II

2003 ◽  
Vol 58 (9-10) ◽  
pp. 609-620 ◽  
Author(s):  
Achim Trebst
Keyword(s):  
Photosystem Ii ◽  
Singlet Oxygen ◽  
D1 Protein ◽  
Structure And Function ◽  
Ps Ii ◽  
And Function ◽  
Β Carotene

AbstractNew and known structural and functional insights in the role of β-carotene and of α- tocopherol in photosytem II are reviewed. A concept is presented connecting the failure of P680 triplet quenching by β-carotene with the formation of singlet oxygen and its scavenging in the turnover of the D1 protein and by tocopherol in the maintenance of PS II structure and function.

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