[Study of electron transfer in pigment-protein complexes of photosystem I].
The electron transfer processes occuring in SDS chlorophyll--protein complexes of photosystem I were studied by flash photolysis. Transient species with lifetime about 5.10(-5) sec were found to be produced on flash excitation of complex buffer solutions. The transient absorption spectrum of the short-lived species measured in the absence of SDS resembles that of P+700. This spectrum was similar with that of chlorophyll anion radical (chl-) when SDS was added to the solution. It is assumed that the charge separation in chlorophyll--protein complexes leads to formation of the primary reduced acceptor X-. The chl-species arised as a result of electron transfer from X- to monomeric form of chl a.
D002734:Chlorophyll / Q000378:metabolism*; D004579:Electron Transport; D010788:Photosynthesis; D010940:Plant Proteins / Q000378:metabolism*; D010944:Plants; D013053:Spectrophotometry
D010940:Plant Proteins; D002734:Chlorophyll
Issledovanie protsessov perenosa elektrona v pigment-belkovykh kompleksakh fotosictemy I.