Results 181 to 190 of about 2,825 (207)

On the electric polarizability of purple membrane

Chemical Physics Letters, 1987
Abstract The permanent dipole moment and electric polarizability of purple membrane have been found using electrooptic methods. Comparison of the results with those for other inorganic or biological disperse particles as well as the observed effects and dynamics for a large range of applied electric field strengths support the proposal of a surface ...
G. Todorov, S.P. Stoylov
openaire   +1 more source

Phospholipid substitution of the purple membrane. The stoichiometry of light-induced proton release by phospholipid-substituted purple membranes

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1978
The method of Warren et al. (1974, Proc. Natl. Acad. Sci. U.S. 71, 622--626) was employed to substitute the polar lipids of the purple membrane of Halobacterium halobium by different phosphatidylcholine species. Substitution at pH 6.5 yields proteolipid complexes in the form of bent open sheets which have a protein to lipid phosphorus ratio similar to ...
E P, Bakker, S R, Caplan
openaire   +2 more sources

Circular dichroism of biological membranes: Purple membrane of Halobacterium halobium

Biochemical and Biophysical Research Communications, 1977
Abstract Circular dichroism spectra of purple membrane suspensions exhibit distortions which are characteristic of particulate α-helical systems with ellipticities at 224 nm of the order of 10000. We show here that the pseudo reference state approach to the correction of CD data, when applied to the purple membrane system, results in a CD spectrum ...
M M, Long, D W, Urry, W, Stoeckenius
openaire   +2 more sources

Electric Dichroism of Purple Membrane

1979
The electric dichroism of bacteriorhodopsin has been studied by subjecting suspensions of purple membrane fragments (mean diameter ~ 0.5 µm) to pulsed electric fields. The reduced dichroism as a function of varying orientation of the purple membrane sheets was calculated, taking the P3 symmetry of the arrangement of bacteriorhodopsin molecules into ...
K. Tsuji, K. Rosenheck
openaire   +1 more source

Stacking of Purple Membranes in Vitro

1986
Negative staining electron microscopy showed that purple membranes isolated from Halobacterium halobium are aggregated in vitro in the form of stacked arrays. This effect is more marked after trypsin treatment. White membranes isolated from mutant strains do not stack and exhibit an average size consistent with previous results of electron microscopy ...
Marcelle Lefort-Tran, Monique Pouphile, Bernard Arrio, Georges Johannin, Pierre Volfin, Lester Packer   +5 more
openaire   +1 more source

Bacteriorhodopsin and the purple membrane of halobacteria

Biochimica et Biophysica Acta (BBA) - Reviews on Bioenergetics, 1979
W, Stoeckenius, R H, Lozier, R A, Bogomolni   +2 more
openaire   +2 more sources

Phase transitions of the purple membrane and the brown holo-membrane X-ray diffraction, circular dichroism spectrum and absorption spectrum studies

Biochimica Et Biophysica Acta - Biomembranes, 1981
Kenji Hiraki, Toshiaki Hamanaka, Toshio Mitsui   +2 more
exaly  

One-step purification of delipidated Bacteriorhodopsin by aqueous-three-phase system from purple membrane of Halobacterium

Food and Bioproducts Processing, 2014
Pei-Jiun Shiu, Hsiu-Mei Chen, Cheng-Kang Lee   +2 more
exaly  

Light-dark adaptation of bacteriorhodopsin in Triton-treated purple membrane

Biochimica Et Biophysica Acta - Bioenergetics, 1980
Rita Casadio, W Stoeckenius
exaly  

The two faces of the purple membrane

Journal of Molecular Biology, 1978
Dorothea-Ch. Neugebauer, H.P. Zingsheim
openaire   +2 more sources