Abstract
Publisher Summary This chapter discusses the phospholipid transfer proteins (PLTP) from higher plants. Plant cells contain soluble proteins that are able to facilitate in vitro bidirectional movements of phospholipids between membranes. These proteins, called “PLTP,” have been purified and characterized from plant tissues and from animal tissues or yeast. PLTPs are assumed to participate in the intracellular distribution of phospholipids and could be involved in membrane biogenesis or in the function of membrane-bound enzymes using lipids as substrates. PLTP can thus modify the lipid composition of a membrane. This studying the phospholipid–protein interactions within the membranes and the effects of changes in lipid concentrations on the functional properties of membranes. PLTP can also been used as mild agents to determine the asymmetry of the lipid composition of the membrane leaflets. Also, these proteins are useful tools for inserting exogenous phospholipids, for example, those containing fluorescent compounds, to determine the mobility of lipids within membranes.
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