| Literature DB >> 2725486 |
M A Livrea1, A Bongiorno, A Bono, L Tesoriere, M C Gueli, C Nicotra, L Pandolfo.
Abstract
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.Entities:
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Year: 1989 PMID: 2725486 DOI: 10.1007/bf00577113
Source DB: PubMed Journal: Mol Cell Biochem ISSN: 0300-8177 Impact factor: 3.396