Lipid topogenesis - 35years on Review uri icon

Overview

MeSH Major

  • Cell Membrane
  • Glycerophospholipids

abstract

  • Glycerophospholipids are the principal fabric of cellular membranes. The pathways by which these lipids are synthesized were elucidated mainly through the work of Kennedy and colleagues in the late 1950s and early 1960s. Subsequently, attention turned to cell biological aspects of lipids: Where in the cell are lipids synthesized? How are lipids integrated into membranes to form a bilayer? How are they sorted and transported from their site of synthesis to other cellular destinations? These topics, collectively termed 'lipid topogenesis', were the subject of a review article in 1981 by Bell, Ballas and Coleman. We now assess what has been learned about early events of lipid topogenesis, i.e. "lipid synthesis, the integration of lipids into membranes, and lipid translocation across membranes", in the 35years since the publication of this important review. We highlight the recent elucidation of the X-ray structures of key membrane enzymes of glycerophospholipid synthesis, progress on identifying lipid scramblase proteins needed to equilibrate lipids across membranes, and new complexities in the subcellular location and membrane topology of phosphatidylinositol synthesis revealed through a comparison of two unicellular model eukaryotes.

publication date

  • January 8, 2016

Research

keywords

  • Review

Identity

Language

  • eng

PubMed Central ID

  • PMC4907860

Digital Object Identifier (DOI)

  • 10.1016/j.bbalip.2016.02.025

PubMed ID

  • 26946259

Additional Document Info