Molar extinction of pigment in the reaction center of photosystem II chloroplasts Moliarnaia ékstinktsiia pigmenta v reaktsionnom tsentre fotosistemy II khloroplastov.

Gol'dfel'd M., Kononenko A., Noks P., Xəlilov R., Khangulov S.

Biofizika, vol.24, no.1, pp.162-164, 1979 (Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 24 Issue: 1
  • Publication Date: 1979
  • Journal Name: Biofizika
  • Journal Indexes: Scopus
  • Page Numbers: pp.162-164
  • Open Archive Collection: Article
  • Azerbaijan State University of Economics (UNEC) Affiliated: Yes

Abstract

The absolute spin number in the Photosystem I chloroplast fragments from Vicia faba plant photooxidized in the presence of silicomolybdate has been carefully measured by means of camparison of ESR signals of P680-centers and of nitroxyl free radical aqueous solution. The data obtained together with simultaneous measurement of light-induced bleaching centered at 680 nm have been used to determine the molar extinction of reduced P680-center epsilon680 = 0.66 . 10(5) M-1 cm-1.