Application of Magnetic Circular Dichroism spectroscopy to the study of the OEC in Photosystem II from cyanobacteria and higher plants.

Abstract

Absorption from the OEC was expected to be too weak to be measured through basic optical spectroscopy, with a molar extinction coefficient of <100, compared to 106 for chlorophyll. We therefore used circular dichroism (CD) and magnetic circular dichroism (MCD) to search for this absorption