Phage Display. MON binding peptides were isolated from a random 7-mer peptide library (New England Biolabs, Inc.) using the phage display protocol. The DNA sequences of the 7mer peptides from the combinatorial peptide library are fused to the gIII of the bacteriophage M13. The peptides are separated from the pIII major coat protein by a short spacer sequence (GGGS). The peptide library has complexities on the order of 10 13 independent clones, which is sufficient to encode the 1.28 x 10 9 possible 7-mer peptide sequences. General phage methods were conducted according to the manufacturer's recommendations.