Peptides with affinity for a phospholipid and uses

Abstract

The present invention relates to a peptide for the specific recognition of lipid vectors. The peptide of the invention comprises the peptide sequence (I; SEQ ID NO: 15) below: (I) J1-J2-J3-J4-J5-J6-Z7-U8-J9-J10-U11-Arg-J13-J14- U15-Lys-Gly-X18-Gly-Thr-J21-Glu-J23-J24-U25-J26- J27-J28-U29-J30-J31-Arg-J33-J34-J35-J36-B37-J38- J39-U40-J41-J42-J43-U44-J45-J46-J47-J48-J49-Arg- J51-U52-J53-J54-Asp-U56-Lys-Ser-Z59-Leu-J61-J62- J63-J64-Z65-J66-J67-U68-J69-J70-J71-U72-J73-J74- J75 in which the amino acids J are chosen, independently of one another, from essential amino acids, or derivatives thereof, such that at least 50% of them are polar residues chosen from Arg, Asn, Asp, Cys, Gln, Glu, Gly, His, Lys, Orn, Pro, Ser, Thr and Tyr; the amino acids U are chosen, independently of one another, from Ala, Cys, Gly, Ile, Leu, Met, Phe, Trp, Tyr and Val; the amino acid X18 is chosen, independently of the other amino acids of the sequence, from Ala, Asn, Cys, Gln, Gly, His, Ile, Leu, Met, Phe, Ser, Thr, Trp, Tyr and Val; the amino acid B37 is chosen, independently of the other amino acids of the sequence, from Arg, Ala, Cys, Gly, Ile, Leu, Met, Phe, Trp, Tyr and Val; the amino acid Z7 is chosen, independently of the other amino acids of the sequence, from Asp and Gly; the amino acids Z59 and Z65 are chosen from Glu, Asp, Lys or Arg; and the superscripts of the residues J, Z, U, X and B represent the position of these amino acids in said sequence.

Dependencies are inferred from the claim text.