Lipid—peptide interactions between fragments of the transit peptide of ribulose‐1,5‐bisphosphate carboxylase/oxygenase and chloroplast membrane lipids

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Abstract
The interactions of fragments of the transit peptide of ribulose-1,5-bisphosphate carboxylase/oxygenase with lipid monolayers was studied in order to investigate the possible involvement of the membrane lipids in the protein import process. The fragments are surface active and have a differential ability to insert in lipid monolayers. The fragments have a preference for the chloroplast galacto- and sulpholipids and phosphatidylglycerol and interact with envelope membrane lipid extracts. These results suggest that probably transit peptide—lipid interactions are involved in the chloroplast protein import process.