Fig. 1.

Summary of sequencing results for the naïve IMP-1 random libraries. An average of 9 random mutants were sequenced from each naïve library. The amino acids found among the random mutants are shown below the labeled amino acid position. Each labeled amino acid position represents a distinct library. Stop codons and frameshift mutations are represented by an asterisk. The numbers in superscript represent the number of occurrences of the mutant among sequenced clones.