| abstract |
ABSTRACT The invention relates to polypeptides, in particular to penta- and hexapeptides, characterized by the general formula I: I or a functional derivative thereof, wherein Z represents hydrogen or NH2, ALK1 represents an alkylene or alkylidene group having 1-6 carbon atoms, ALK2 represents an alkylidene group having 1-6 carbon atoms, Metx represents the aminoacid radical Met, Met(0) or Met(02) and Q represents the aminoacid radical Lys or Arg, with the proviso that one of the aminoacid radicals Q and the C-terminal Phe is in the D-configuration and the other has the L-configuration. |