Antenna Systems and Energy Transfer in Cyanophyta and Rhodophyta

摘要: The molecular architecture and energy transfer processes in the phycobilin-chlorophyll antenna systems of Cyanophyta, Glaucophyta, Rhodophyta Cryptophyta are discussed with an emphasis on structures individual phycobiliprotein building blocks. assembly phycobilisomes from phycobiliproteins is explained, binding chromophores to apoproteins thylakoid membranes. Structure-function relationships light crystal a normal-mode analysis. analysis helps clarify aspects protein structure that critical for determining optical properties phycobiliproteins. A gradient levels realized by specific linker polypeptides common Energy-transfer clearly shown time-resolved fluorescence spectra intact cells isolated phycobilisomes. rate between weakly interacting can be described Forster mechanism, predictions agree well experimental results. Evolution seems have increased both number per unit monomer range complex, so as capture increasing fraction available solar energy. Further analyses basis should lead improved understanding how interactions maximize efficiency capture.