This immunoquantitation method used is described in detail in the reference given (Brown et al. 2008). The reviewer is directed in particular to the Supplementary Methods section. To allow readers to get a better understanding of the method in this manuscript we have revised this part of the Experimental Section, adding extra text to increase clarity concerning the method.
The approach and methods are robust and the ability to quantify components of the photosynthetic electron transfer chain is powerful.