Re: universality of codons to amino acids


Kleuskes & Moos wrote:
> Stephen Montgomery-Smith schreef:
>
> > Kleuskes & Moos wrote:
> > > Stephen Montgomery-Smith schreef:
> > >
[snip]
>
> > What happens is that the DNA is coded into messenger RNA, which
> > then has to be converted to amino acids by some stuff called ribosome.
>
> A ribosome actually consist of a complex of proteins. So it's not just
> "stuff".

Minor point. A ribosome is a complex of proteins *and* two ribosomal
RNAs. The proteins self-assemble on the two rRNAs (ribosomal RNAs) and
*assist* the rRNAs in directing translation of the mRNA. Ribosomes are
actually at base a ribozyme; the rRNA itself, without proteins, has
some function. This is part of the evidence supporting the idea of an
RNA world.
>
[snip]

> Kleuske.

.

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