posted on Mar, 29 2012 @ 09:18 AM
Originally posted by rhinoceros
The amino acids were undamaged by the experiment, which mimiced the impact of a comet, and went on to form the bonds that link them together as
proteins which enable life to exist.
It's my understanding that RNA came before the primordial 10 or so amino acids (which don't need to be biosynthesized unlike the others), and that the
genetic code with its codon boxes was already established at this point. At least in modern life, amino acids are only bonded thru the actions of
interacting RNA molecules (mRNA, tRNA & rRNA). That's why the quoted piece is rather illogical. Proteins didn't enable life, but RNA enabled use of
proteins which paved the way for cellular life.
edit on 29-3-2012 by rhinoceros because: (no reason given)
That makes sense. RNA can perform the functions of both DNA and enzymes...but it is far less stable than DNA. They've done studies with a
bacteriophage (I don't remember which one) and found that self-replicating RNA structures can and do withstand selective pressures.
Anyway, I wouldn't get too excited about amino acids. Proteins, not amino acids, must be present and survive. Because with the proteins, the chances
are good that RNA and/or DNA are present.
Also, this doesn't solve the problem of how life originated. It just moves the responsibility for it somewhere else.
edit on 3/29/2012 by
HappyBunny because: (no reason given)