Literature DB >> 19431732

Effect of membrane potential on the conformation of bacteriorhodopsin reconstituted in lipid vesicles.

V Brumfeld, I R Miller.   

Abstract

The effect of applied diffusion potential on circular dichroism (CD) of bacteriorhodopsin, reconstituted in lipid vesicles, was measured. The change in CD indicates that the applied electrical field, irrespective of its direction, decreases the alpha-helical fraction and increases the random fraction of the protein. The results are interpreted by unfolding of edges of the helices, upon their submerging into polar environment when the lipid bilayer is electrostricted or (and) the helices are stretched by the electrical field across the membrane.

Entities:  

Year:  1988        PMID： 19431732      PMCID： PMC1330380          DOI： 10.1016/S0006-3495(88)83011-X

Source DB:  PubMed          Journal:  Biophys J        ISSN： 0006-3495            Impact factor:   4.033


  20 in total

1.  Improved isolation procedures for the purple membrane of Halobacterium halobium.

Authors:  B M Becher; J Y Cassim
Journal:  Prep Biochem       Date:  1975

2.  The kinetic and equilibrium components of selective ionic permeability mediated by nactin- and valinomycin-type carriers having systematically varied degrees of methylation.

Authors:  G Eisenman; S Krasne; S Ciani
Journal:  Ann N Y Acad Sci       Date:  1975-12-30       Impact factor: 5.691

3.  Electrodichroism of purple membrane: ionic strength dependence.

Authors:  E Papp; G Fricsovszky; G Meszéna
Journal:  Biophys J       Date:  1986-05       Impact factor: 4.033

4.  Effects of light adaptation on the purple membrane structure of Halobacterium halobium.

Authors:  B Becher; J Y Cassim
Journal:  Biophys J       Date:  1976-10       Impact factor: 4.033

5.  Molecular weight of bacteriorhodopsin solubilized in Triton X-100.

Authors:  J A Reyenolds; W Stoeckenius
Journal:  Proc Natl Acad Sci U S A       Date:  1977-07       Impact factor: 11.205

Review 6.  Infrared spectroscopic studies of biomembranes and model membranes.

Authors:  D C Lee; D Chapman
Journal:  Biosci Rep       Date:  1986-03       Impact factor: 3.840

7.  Differential absorption flattening optical effects are significant in the circular dichroism spectra of large membrane fragments.

Authors:  B A Wallace; C L Teeters
Journal:  Biochemistry       Date:  1987-01-13       Impact factor: 3.162

8.  Binding of all-trans-retinal to the purple membrane. Evidence for cooperativity and determination of the extinction coefficient.

Authors:  M Rehorek; M P Heyn
Journal:  Biochemistry       Date:  1979-10-30       Impact factor: 3.162

9.  Purple membrane vesicles: morphology and proton translocation.

Authors:  S B Hwang; W Stoeckenius
Journal:  J Membr Biol       Date:  1977-05-12       Impact factor: 1.843

10.  Second-derivative infrared spectroscopic studies of the secondary structures of bacteriorhodopsin and Ca2+-ATPase.

Authors:  D C Lee; J A Hayward; C J Restall; D Chapman
Journal:  Biochemistry       Date:  1985-07-30       Impact factor: 3.162
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  2 in total

1.  Structural distinction between soluble and particulate protein kinase C species.

Authors:  D S Lester; N Orr; V Brumfeld
Journal:  J Protein Chem       Date:  1990-04

2.  Electroporation of the photosynthetic membrane: structural changes in protein and lipid-protein domains.

Authors:  Y Rosemberg; M Rotenberg; R Korenstein
Journal:  Biophys J       Date:  1994-09       Impact factor: 4.033
  2 in total

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