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Type II tRNA. (A) A typical type II tRNA diagram [9] of tRNALeu from Pyrococcus (three species). (B) A type II tRNA colored for internal homologies as in Figure 1 (Thermus thermophilus (Tth) tRNATyr) [34]. Ac, anticodon. Blue arrows indicate U-turns. Red arrows indicate positions of internal deletions processing the 93 -nucleotide precursor (magenta→green) (Figure 1).
