Figure 3.

Recognition helix sequences of fingers isolated by our selection. For candidates that were isolated multiple times (as judged by nucleotide sequence), the number of clones obtained is shown in parentheses. The consensus sequence(s) of fingers selected by phage display for each target subsite also are shown (6). +, positively charged residue; _, no discernible preference; *, candidates with a 2-bp deletion downstream of the sequence encoding the recognition helix; and arrows illustrate a few of the most plausible potential base contacts.