. "\"A complex located in a photosynthetic membrane that consists of a photoreaction center associated with accessory pigments and electron carriers. Examples of this component are found in Arabidopsis thaliana and in photosynthetic bacterial and archaeal species.\" [GOC:ds, GOC:mah, ISBN:0140514031, PMID:9821949]" . . "photosystem" . "Wikipedia:Photosystem" . . . . "reaction center" . "reaction centre" .