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A simple question that had occurred to me. Considering the small doubt of transcribed genes in both organelles, I would doubt it, but are there any known ribozymes strictly found in either mitochondria or chloroplasts?

UPDATE: Actually, I just thought of rRNA acting as a peptidyl transferase in mitochondrial ribosomes... Any other ideas?

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can't we consider ribosomes as colossal ribozymes ? –  biogirl Apr 14 at 18:12
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