脂質膜構造体に細胞透過能を付与および／または脂質膜構造体の細胞透過能を増強するペプチド、ならびにそれらペプチドと結合した脂質を構成脂質として含む、細胞透過能を有するまたは細胞透過能が増強された脂質膜構造体

摘要

Provided are peptides imparting cell permeability to a lipid membrane structure and/or enhancing the cell permeability of a lipid membrane structure, and a lipid membrane structure which comprises, as a constituent lipid, a lipid bound to such a peptide and has cell permeability or shows enhanced cell permeability. The amino acid sequences of the peptides imparting cell permeability to a lipid membrane structure and/or enhancing the cell permeability of a lipid membrane structure are represented by: LX 1 X 2 X 1 X 1 X 1 L, LLX 2 X 1 X 1 X 1 L and LX 1 X 2 X 1 X 1 L (wherein L represents a leucine residue; X 1 represents a polar amino acid residue; and X 2 represents a polar, non-charged and branched chain amino acid residue).