A compound comprising a peptide moiety comprising, consisting essentially of, or consisting of, the peptide sequence of a tyrosine cluster YC of the BY-kinase of a Gram positive or Gram negative bacteria, or a fragment or an analogue thereof, and an adenine peptide analogue PNA(A), whereas the peptide moiety and the PNA are linked together. The compound is useful as an inhibitor of bacterial tyrosine kinase.
