Alteration of the H-Bond to the A1A Phylloquinone in Photosystem I: Influence on the Kinetics and Energetics of Electron Transfer

In Photosystem I, the backbone nitrogen of Leu722PsaA forms a hydro-gen bond with the C4 carbonyl oxygen of phylloquinone in the A1A site. A previous low-temperature EPR study indicated that substitution of Leu722PsaA with a bulky Trp residue results in a weakened H-bond. Here, we employ room temper...

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Veröffentlicht in:	The journal of physical chemistry. B 2011-03, Vol.115 (8), p.1751-1759
Hauptverfasser:	Srinivasan, Nithya, Santabarbara, Stefano, Rappaport, Fabrice, Carbonera, Donatella, Redding, Kevin, van der Est, Art, Golbeck, John H
Format:	Artikel
Sprache:	eng
Schlagworte:	B: Macromolecules, Soft Matter
Online-Zugang:	Volltext
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