Journal of General Virology

Fig. 4. Putative hammerhead-like structure of HSVd. (a) Hammerhead ribozyme structure of plus-strand of PLMVd; (b) putative hammerhead-like structure that can be formed in all sequence variants of HSVd; and (c) the 13 conserved nucleotides present in all typical hammerhead structures. The essential nucleotides for ribozyme activity are boxed, with arrows indicating a predicted self-cleavage site. Roman numerals denote stem numbering according to the consensus hammerhead structure (Hertel et al., 1992).

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