Transverse organization of the PS I complex

Although it was originally suggested that plastocyanin was located in the lumen, contradictory reports followed. However, studies with vesicles of opposite sidedness verified that plastocyanin was indeed bound to the inner thylakoid surface [39], consistent with its function in the lumen [6]. The final PS I electron acceptors, ferredoxin and ferredoxin-NADP reductase, are located on the stroma-facing side of the thylakoid membrane [40]. 

There is little evidence as yet for the specific association of individual acyl lipids with thylakoid complexes. However, phosphatidyldiacylglycerol, esterified with 16 3-T/ AA5-hexadecenoic (a fatty acid found only in thylakoid membranes), is associated mainly with oligomeric LHC II [ +5], MGDG has been implicated also in mediating interaction between the PS II complex and LHC II [46], and ATP 

Lateral heterogeneity in the location of thylakoid intrinsic complexes 

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