Now showing items 1-10 of 29
Topological studies of spinach 22 kDa protein of Photosystem II
(Elsevier, 1994-12-30)
An intrinsic 22 kDa polypeptide is associated with the O2-evolving Photosystem II core complex in a variety of green plants, although it does not appear to be required for O2 evolution. Digestion of thylakoid membranes and ...
Early events of Bacillus anthracis germination identified by time-course quantitative proteomics
(WILEY-VCH Verlag, 2006-10)
Germination of Bacillus anthracis spores involves rehydration of the spore interior and rapid degradation of several of the protective layers, including the spore coat. Here, we examine the temporal changes that occur ...
Effects of cholate on Photosystem II: Selective extraction of a 22 kDa polypeptide and modification of QB-site activity
(Elsevier, 1993-10-04)
A quinone-mediated two-electron gate is shared by Photosystem II (PS II) and the photosystem of purple bacteria. In the bacterial reaction center, electron transfer from the reduced primary quinone acceptor, Q-A, to the ...
Calcium-dependent fusion of the plasma membrane fraction from human neutrophils with liposomes
(Elsevier, 1990-06-11)
A cell-free assay monitoring lipid mixing was used to investigate the role of Ca2+ in neutrophil membrane-liposome fusion. Micromolar concentrations of Ca2+ were found to directly stimulate fusion of inside-out neutrophil ...
On the origin of light-induced changes in the proton magnetic relaxation rate of chloroplast thylakoid membrane suspensions
(Elsevier, 1981-03)
The spin-lattice relaxation rate of solvent protons in suspensions of chloroplast thylakoid membranes undergoes a large transient depression following illumination in white light. This change appears to require the presence ...
NMR relaxivity changes in chloroplast suspensions. Effects of NH2OH and of treatments altering the redox state of the photosynthetic electron transport chain
(Elsevier, 1980-12-03)
Treatments (illumination, chemical oxidation or reduction) which are potentially capable of producing paramagnetic centers in chloroplast thylakoid membranes do not produce enhancements of the proton magnetic relaxivities ...
Topology of NH2OH-induced Mn(II) release from chloroplast thylakoid membranes
(Elsevier, 1981-07-13)
Permeant and impermeant metal ion chelators have been used in conjunction with NMR relaxation time measurements (T1) of solvent protons to probe the membrane topology of the Mn(II) released from the water-oxidizing center ...
Isolation and characterization of an oxygen-evolving Photosystem II reaction center core preparation and a 28 kDa Chl-a-binding protein
(Elsevier, 1987-03-25)
An oxygen-evolving Photosystem II reaction center complex was characterized by using both biophysical and biochemical techniques. A low-temperature EPR study of this preparation has revealed that cytochrome b-559 has been ...
Evidence for two cyclic photophosphorylation reactions concurrent with ferredoxin-catalyzed non-cyclic electron transport
(Elsevier, 1985-06-26)
Addition of ferredoxin to isolated spinach chloroplast thylakoid membranes reconstitutes phosphorylating electron transfer characterized by elevated P/O ratios (1.6). When oxygen is the terminal electron acceptor for reduced ...