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Catalytic RNA species have their place in the RNA world hypothesis, yes. But to suggest that rRNA itself can catalyze peptidyl-tranferase reactions without the
by Lanoteu 12y ago
Catalytic RNA species have their place in the RNA world hypothesis, yes. But to suggest that rRNA itself can catalyze peptidyl-tranferase reactions without the use of ribosomal proteins in today's organisms may be far-fetched. Even the most primitive of organisms have ribosomal proteins to accompany the rRNA.
- julienchastang 12y agoFrom the wikipedia article referenced earlier: "Peptidyl transferase activity is not mediated by any ribosomal proteins but by ribosomal RNA (rRNA), a ribozyme. This RNA relic is the most significant piece of evidence supporting the RNA World hypothesis."