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The secondary structures of the conserved core regions of the 11nt/3E-Syn variant and the Azoarcus ribozyme. The core region consists of 92 nt involving P3, P4, L4, P6, P7 and part of P8. Between the Azoarcus ribozyme and the 11nt/3E-Syn variant (see text) 78 of the 92 nt in the core regions are identical. The 14 positions that differ between the two ribozymes are indicated in red or blue.
