Biological Function of the Cellular Lipid BMP-BMP As a Key Activator for Cholesterol Sorting and Membrane Digestion

Overview

Journal Neurochem Res

Specialties Chemistry
Neurology

Date 2010 Dec 8

PMID 21136156

Citations 59

Authors

Hichem D Gallala

Konrad Sandhoff

Affiliations

Soon will be listed here.

Abstract

Bis(monoacylglycero)phosphate (BMP) is one of the most intriguing classes of lipids discovered to date. Its biosynthetic pathway is still not fully known, even though studies point to cardiolipin and PG as sources. BMP has an unusual stereoconfiguration which is responsible for its slow catabolism. It is localized exclusively in the inner membranes of late endosomes, and mostly, lysosomes. BMP is negatively charged at the acidic pH of lysosomes, and these charges are central to its role in the degradation of lipids and membranes in the lysosome. In effect, these negative charges facilitate the adhesion of the soluble positively charged hydrolases and activator proteins, thus allowing them to degrade the lipids at the interface of the inner membranes of the lysosome. In this review, we will summarize the different properties of BMP and showcase its importance in the catabolism of lipids and membranes in the lysosome.

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