The proteins of the electron-transport chain is located in ; The thylakoid membrane.
The protein complexes that contains the light absorbing pigments (photosystem) in chloroplasts which enables the chloroplast to absorb light energy from a light source ( usually sunlight ) are located within the thylakoid spaces seen between the thylakoid membrane.
Photosynthesis is the process whereby green plants produce their food with the use of light energy, water and carbon-dioxide from the atmosphere. The chloroplast is found in the green pigments of the green plants.
Hence we can conclude that The proteins of the electron-transport chain is located in The thylakoid membrane.
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