Effects of defined amino acid residues at different positions in a
nonameric randomized peptide. (A) Effect of leucine,
methionine, and valine residues at different positions in the nonameric
peptide library on bradykinin binding. (B) Effects of
aspartate, glycine, and proline at different positions. All competitor
peptides were tested at 1.0 μM in the presence of 0.1 μM
[3H]bradykinin. The OppA concentration was 20 μg/ml;
error bars indicate the standard deviation
(Xσn −
1), n = 3.