The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated. Lhca6 seems involved in the function of the photosystem I in low light conditions, when other LHCA proteins are less aBundant. Required, together with LHCA5, for the formation of a full-size NAD(P) H dehydrogenase-photosystem I supercomplex (NDH-PSI) that triggers cyclic and chlororespiratory electron transport in chloroplast thylakoids, especially under stress conditions.
