Figure 2.

Results of selection amplification using Nova-1 and Nova-2 KH3 domains. The first digit of each clone number indicates the clone's origin as from the Nova-1 or Nova-2 selection, the second two digits indicate the selection round number (9, 10, or 11), and the last two digits the individual clone number. Sequences are arranged in motifs according to sequence homology. Lowercase letters indicate the fixed sequence of the selection-amplification RNA. The core UCAY Nova KH3 recognition element is indicated by boldface in each sequence. Conserved nucleotides (including the two first base pairs of the conserved motif I and II stem) are underscored with dashes, and potential base pairing interactions are indicated by a solid underscore. Sequences from individual clones that appear to be identical are represented only once, with the number of individual isolates indicated in parentheses after the sequence.