Re: O.K. Heres one.

On 27 Aug, 18:14, Inez <savagemouse...@xxxxxxxxxxx> wrote:
On Aug 27, 3:26 am, spintronic <spintro...@xxxxxxxxxxx> wrote:

In the so called R.N.A-world hypothesis.

RNA ribozymes, are touted as the enzymatical saviours of abiogenesis &
evolution.

But you have 2 problems.

1) For this to occur. You need *REALLY-REALLY-SHORT* ribozymes.

Certainly less than 100 bases long.

Why?  On what basis have you determined the necessary length of
ribozymes?


Simple, they would have first have to have started as single
nucleotides, then join to form small peptides, then grow into RNA's
with some function.

They would require function pretty damn quick, as there are
gazzillions of way's to break the RNS strands down.
Then you're back to square 1.

There is no way to get RNA's upto a few hundred bases long without
some sort of replication.



You then tout, about how such a ribozyme is possible.

But you then ignore 2.

2) mRNA is sometimes *thousands* of bp's long, and exhibits *NO*
enzymatical activity at all.

How do you know this?  Has anyone checked to see if mRNA ever exhibits
"enzymatical" activity?


I know this, because for them to have *ANY* activity, they need to
fold.

They don't. Or they couldn't pass through the ribosome.


Why would this be a problem anyway?  


Thankfully it's not a problem, as it never occurs.

If it did occur, they could form some undesired function, like chewing
our dna up, or disrupting some process.

So why doesn't it?



According to R.N.A-World Hypothesis, every time DNA is transcribed,
that mR.N.A should in effect perform some enzymatical activity enroute
to being translated.

So I have a question.

Why doesn't it?

Your argument seems to be that the RNA world hypothesis requires that
all RNA over a certain length be a ribozyme,

No.


and that since they aren't the hypothesis is invalid.


No, but the hypothesis is invalid.

 And yet you have neither shown that
the RNA world proposal actually has this requirement,


RNA world requires functional RNA,

That functional RNA, is encoded in a RNA genome. (laugh).

That RNA genome is then converted (like vinyl to CD) yo DNA.

That DNA encodes the *ORIGINAL* Ribozymes.

They have function.


Now when you transcribe the DNA into mRNA.

You *was* transcribing the DNA into the *original* RNA (which had
function) A.K.A mRNA.

that the laws of chemistry have this requirement, or even that mRNA doesn't have
enzymatic activity.

It doesn't.








Here is a Wikipedia article that indicates that ribozymes exist.http://en..wikipedia.org/wiki/Ribozyme

Since they exist, and since mRNA either does or doesn't exhibit enzyme
activity (and either one would invalidate your 'argument') then you
would seem to be arguing against reality. I suppose this is an
activity creationists enjoy, but it seems rather odd to the rest of us.

.

Relevant Pages

  • Re: O.K. Heres one.
    ... RNA, and you have a pathological need to bellow about things you don't ... Since the RNA genome encodes functional RIBOZYMES, then any mRNA ... BECAUSE IT ISN'T BEING TRANSLATED INTO PROTEIN. ...
    (talk.origins)
  • Re: O.K. Heres one.
    ... that ribozymes about 100 bases long DO exist castrates his festering ... ribozymes to cleave their own genomic RNA to become infective). ... It does fold - BUT NOT ALL FOLDS GENERATE RIBOZYME ACTIVITIES. ... mRNA that doesn't fold ...
    (talk.origins)
  • Re: O.K. Heres one.
    ... ribozymes to cleave their own genomic RNA to become infective). ... Why would you expect mRNA to have enzymatic activity? ...
    (talk.origins)
  • Re: O.K. Heres one.
    ... RNA, and you have a pathological need to bellow about things you don't ... Since the RNA genome encodes functional RIBOZYMES, then any mRNA ... when transcribing this *ORIGINAL* DNA. ...
    (talk.origins)
  • Re: The Protein Takeover. PNs scenario
    ... later replacement of one of those ribozymes with another enzyme ... all the mapping between amino acid and tRNA occur via A and C ... Recycling RNA with ribozyme ribonucleases is in fact ...
    (talk.origins)