Re: Why Purines, Why Heat Cycle


<TomHendricks474@xxxxxx> wrote in message news:d3um06$1ju$1@xxxxxxxxxxxxxxxxxxxxxx
> Why Purines instead of other possible bases?
> I suggest because ATP and GTP were better energy sources
> that gave the purine bases A and G an advantage.

Why do you say that? In what sense are purine nucleotide tri-phosphates
better energy sources than, say, pyridine nucleotide tri-phosphates?

And how does being a better energy source provide an advantage?

And, do you have any evidence that nucleotide tri-phosphates ever existed
in a pre-biotic context?


.

Quantcast