... knowledge, the work described here and in the related publications [1,7] is the first kinetic analysis of the in vitro interactions Cyt f plastocyanin and plastocyanin Fig. 4. Comparison of ionic strength ... Schlarb-Ridley et al.(Eur. J. Biochem. 269) Ó FEBS 2002 Role of electrostatics in the interaction between plastocyanin and photosystem I of the cyanobacterium Phormidium laminosum Beatrix G. Schlarb-Ridley1, ... transition state revealedpositive activation entropies, suggesting partial desolvation of the interface in the transition state. In comparison withplants, plastocyanin and photosystem I of Phormidium laminosum...