US Patent 7820624 Peptide ligands

A peptide consisting of or comprising an amino acid sequence selected froma) PX1X2X3T [SEQ.ID.NO.:1];b) PSX4S [SEQ.ID.NO.:2];c) QX5X6X7Q [SEQ.ID.NO.:3];d) SX8S [SEQ.ID.NO.:4],in which X1, X2 and X3, which may be the same or different, each represents an amino acid residue;X4 represents an amino acid residue; andX5 and X7, which may be the same or different, each represents an amino acid residue, X6 represents an amino acid residue having an amide side chain; andX8 represent an amino acid having an aliphatic side chain, which peptide binds to dendritic cells and also to other types of cells. The peptide may be used a target non-viral and viral vectors to such cells.