<Li> Photosystems I and II </Li> <Li> Cytochrome b6f complex </Li> <P> Photosystem II is located mostly in the grana thylakoids, whereas photosystem I and ATP synthase are mostly located in the stroma thylakoids and the outer layers of grana . The cytochrome b6f complex is distributed evenly throughout thylakoid membranes . Due to the separate location of the two photosystems in the thylakoid membrane system, mobile electron carriers are required to shuttle electrons between them . These carriers are plastoquinone and plastocyanin . Plastoquinone shuttles electrons from photosystem II to the cytochrome b6f complex, whereas plastocyanin carries electrons from the cytochrome b6f complex to photosystem I . </P> <P> Together, these proteins make use of light energy to drive electron transport chains that generate a chemiosmotic potential across the thylakoid membrane and NADPH, a product of the terminal redox reaction . The ATP synthase uses the chemiosmotic potential to make ATP during photophosphorylation . </P>

What are the proteins called that transport electrons in the thylakoid membrane