Table 1. Sequences of the intact cholic-acid binding regions of 19 sequenced clones (a) and sequences of three ssDNAs that can fold into a three-way junction (b).

(a) The type of junction included in each clone is indicated. (b) Three sets of stem regions are shown in underlined, bold and outlined letters, respectively. Letters in italics denote mismatches or wobble base pairs in stems.