Cysteine-free technetium (tc) or rhenium (re) chelating peptide tags and their use

摘要

The present invention relates to a peptide tag which can be used to bind a Technetium (Tc) or Rhenium (Re) radionuclide to a protein of interest which comprises the peptide tag and allows the imaging of such a tagged protein. In particular the present invention relates to a peptide tag which chelates a Tc or Re atom but which does not comprise a Cysteine residue.