Tuning electron transfer by ester-group of chlorophylls in bacterial photosynthetic reaction center.
Accessory chlorophylls (B(A/B)) in bacterial photosynthetic reaction center play a key role in charge-separation. Although light-exposed and dark-adapted bRC crystal structures are virtually identical, the calculated B(A) redox potentials for one-electron reduction differ. This can be traced back to different orientations of the B(A) ester-group. This tuning ability of chlorophyll redox potentials modulates the electron transfer from SP* to B(A).
Ishikita
Hiroshi
H
Institute of Chemistry, Crystallography, Department of Biology, Chemistry, and Pharmacy, Free University of Berlin, Takustrasse 6, D-14195 Berlin, Germany.
Loll
Bernhard
B
Biesiadka
Jacek
J
Galstyan
Artur
A
Saenger
Wolfram
W
Knapp
Ernst-Walter
EW
D002734:Chlorophyll / Q000378:metabolism*; D018360:Crystallography, X-Ray; D004579:Electron Transport; D004952:Esters / Q000378:metabolism; D045322:Photosynthetic Reaction Center Complex Proteins / Q000737:chemistry / Q000378:metabolism*; D011487:Protein Conformation; D012242:Rhodobacter sphaeroides / Q000378:metabolism
D004952:Esters; D045322:Photosynthetic Reaction Center Complex Proteins; D002734:Chlorophyll