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  • 11-cis retinaldehyde  (2)
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Material
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  • 1
    Electronic Resource
    Electronic Resource
    Binding of 11-cis retinaldehyde to the partially purified cellular retinaldehyde binding protein from bovine retinal pigment epithelium (1987)
    Springer
    Cellular and molecular life sciences 43 (1987), S. 582-586 
    Details
    ISSN: 1420-9071
    Keywords: CRALBP ; 11-cis retinaldehyde ; retinal pigment epithelium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary 11-cis retinaldehyde binding analysis was performed on a bovine retinal pigment epithelium preparation of cellular retinaldehyde binding protein (CRALBP), whose purity degree was estimated as 75%. Equilibrium binding studies were carried out measuring the replacement of tritium-labeled with unlabeled 11-cis retinaldehyde at 25°C. Analysis of the experimental data both by a direct curve-fitting procedure utilizing a non linear least square regression analysis and by a conventional Scatchard plot revealed a single non-interacting binding site with an apparent equilibrium constant of 0.9×10−7 M. A binding stoichiometry of approximately 1 mol of 11-cis retinaldehyde/mol of binding protein can be calculated from the experimental data. Competition studies carried out in the presence of unlabeled ‘trans’ and ‘cis’ isomers of Vitamin A derivatives confirm the high degree of specificity of the 11-cis retinaldehyde binding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02143594
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Analysis of a soluble lipid-protein complex carrying endogenous 11-cis retinaldehyde from bovine retinal pigment epithelium (1989)
    Springer
    Molecular and cellular biochemistry 85 (1989), S. 181-189 
    Details
    ISSN: 1573-4919
    Keywords: 11-cis retinaldehyde ; retinal pigment epithelium ; shed disc digestion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Summary A soluble lipid-protein complex in bovine retinal pigment epithelium is shown to carry endogenous 11-cis retinaldehyde, in the extent of 15% of the total 11-cis retinaldehyde found in this tissue. The complex, analyzed with respect to its chemical composition, exhibits a lipid composition close resembling the lipid composition of the rod outer segment membrane; the SDS-PAGE evidences the presence of a number of protein bands, two of which of 34 and 27 kDa appear glycoproteins. Finally, the lipid-protein complex exhibits a discrete level of a Cathepsin D-like protease activity. From the above, the possibility is discussed that the soluble lipid-protein complex could represent some phagolysosomal inclusion occurring in the pigment epithelial cells upon rod outer segment phagocytosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00577113
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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