Lipid transporters: membrane transport systems for cholesterol and fatty acids.

Abstract:

:Lipophilic molecules can passively diffuse across cell membranes, a process that is driven by the concentration gradient, by availability of acceptors to facilitate desorption from the bilayer, and by cellular metabolism. However, evidence has accumulated that supports the existence of specialized, protein-facilitated membrane transport systems for many lipophilic molecules. This has generated considerable debate regarding why such systems need to exist. The present review summarizes recent developments related to the membrane transport systems for cholesterol and fatty acids, which have been shown to involve structurally related proteins. General similarities of the cholesterol and fatty acid systems to other lipid transport systems (briefly discussed in the Introduction section) are highlighted in the Conclusion section. The overall aim of the present review is to illustrate why lipid transporters are needed in vivo, and how they accomplish specific functions that can not be met by lipid diffusion alone.

authors

Abumrad NA,Sfeir Z,Connelly MA,Coburn C

doi

10.1097/00075197-200007000-00003

subject

Has Abstract

pub_date

2000-07-01 00:00:00

pages

255-62

issue

4

eissn

1363-1950

issn

1473-6519

journal_volume

3

pub_type

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