"Among 34 additional fungal genomes available, 18 species carry an NCU01977 TPP riboswitch representative and 16 of these also appear to exploit the ??-????? base-pairing mechanism for gene control (Figure 4B; Supplementary Figure S6).Although the central portion of the ?? element is highly conserved (consensus is RGCGGYRRY, where R is a purine and Y is a pyrimidine), there are several positions th" . . . .