title: Energy transfer and site of energy trapping in photosystem I.
abstract: Studies of mutants of Chlamydomonas reinhardi deficient in the chlorophyll . protein complex CP1 show that energy transfer occurs between at least three Photosystem I units. Evidence for the connection of the Photosystem I units is also obtained by studying their optical cross-section in wild-type cells in which a fraction of the Photosystem I centers are inactivated. The site of energy trapping in the Photosystem I unit is shown to be the photochemical center itself and not the surrounding long-wavelength absorbing forms of chlorophyll.
mesh_terms: D002696:Chlamydomonas / Q000378:metabolism / Q000648:ultrastructure; D002736:Chloroplasts / Q000378:metabolism*; D004735:Energy Transfer; D010785:Photophosphorylation; D010788:Photosynthesis; D013057:Spectrum Analysis