title: On the site of function of the Rieske iron-sulfur center in the chloroplast electron transport chain.
abstract: A photosynthetic mutant (strain 1073) of Lemna perpusilla was previously shown to have a block in the electron transport chain between plastoquinone and cytochrome f ((1976) Plant Physiol. 57, 577--579). Electron paramagnetic resonance analysis of chloroplasts from this mutant indicates that the g = 1.89 signal of a reduced iron-sulfur center (the 'Rieske' iron-sulfur center) is absent. The absence of this signal indicates the Rieske center is either absent from or defective in the mutant, and this result is consistent with this iron-sulfur center functioning between plastoquinone and cytochrome f in the electron transport chain of chloroplasts.
mesh_terms: D001665:Binding Sites; D002736:Chloroplasts; D003580:Cytochromes; D004578:Electron Spin Resonance Spectroscopy; D004579:Electron Transport; D007506:Iron-Sulfur Proteins; D008667:Metalloproteins; D009154:Mutation; D010788:Photosynthesis; D010944:Plants
chemical_list: D003580:Cytochromes; D007506:Iron-Sulfur Proteins; D008667:Metalloproteins