Extended Data Fig. 8: SDS-PAGE of purified PSI, ferredoxin and plastocyanin.
From: The structure of a triple complex of plant photosystem I with ferredoxin and plastocyanin

PSI – dissolved PSI crystals, purified ferredoxin and plastocyanin as described in Methods section. Polypeptide composition of dissolved P. sativum PSI crystals and purified plastocyanin (Pc) and ferredoxin (Fd). Samples were solubilised overnight at room temperature in SDS solubilising buffer containing 1% mercaptoethanol. S-standards; PSI contains 3 μg chlorophyll, Fd 3 μg and Pc 3 μg.