ISSN:
1573-5079
Keywords:
Chlorophyll fluorescence
;
Light-harvesting chlorophyll protein complex
;
Protein diffusion
;
Protein phosphorylation
;
Thylakoid membranes
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract The ATP-induced quenching of chlorophyll fluorescence in chloroplasts of higher plants is shown to be inhibited when the mobility of the protein complexes into the thylakoid membranes is reduced. Its occurrence also requires the presence of LHC complexes and the ability of the membranes to unstack. These observations, in addition to a slight increase of charge density of the surface—as indicated by 9-aminoacridine fluorescence and high salt-induced chlorophyll fluorescence studies—and partial unstacking of the membranes—as monitored by digitonin method and 540 nm light scattering changes—after phosphorylation, suggest that the ATP-induced quenching of chlorophyll fluorescence could reflect some lateral redistribution of membrane proteins in the lipid matrix of the thylakoids.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00052123
