Energy transfer kinetics of phycoerythrocyanin trimer from cyanobacteriumAnabaena variabilis (II)

J Zhang; J Zhao; L Jiang; J Chen; T Ye; Q Zhang

doi:10.1007/BF02882717

Energy transfer kinetics of phycoerythrocyanin trimer from cyanobacteriumAnabaena variabilis (II)

Sci China C Life Sci. 1998 Apr;41(2):133-8. doi: 10.1007/BF02882717.

Authors

J Zhang¹, J Zhao, L Jiang, J Chen, T Ye, Q Zhang

Affiliation

¹ Institute of Photographic Chemistry, Chinese Academy of Sciences, 100101, Beijing, China.

PMID: 18726196
DOI: 10.1007/BF02882717

Abstract

The excitation energy transfer processes in trimeric PEC have been studied by using steady-state and time-resolved fluorescence spectra techniques in detail. The results indicate that the energy transfer processes should take place between alpha(84)-PVB and beta(84)-or beta(155)-PCB chromophores with the time constants 34.7 ps and 175-200 ps individually; in contrast with monomeric PEC, from time-resolved fluorescence anisotropic spectrum technique, the decay constant of 45 ps which was assigned to the energy transfer time among three beta(84)-PCB chromophores was observed and the energy levels of beta(84)-and/or beta(155)-PCB chromophores were confirmed to turn over in trimeric PEC.