Figure 1. Production of peptides that inhibit PA–LF binding.

(a) Competitive selection of PA-binding phages. Phages from the library were allowed to bind to PA63-coated plastic wells. Selective elution of phage peptides recognizing the LF-binding site on PA was obtained by addition of purified LF. (b) From phage to MAP. Branched peptides in MAP form maintained the general features of phage-exposed peptides.