Re: A cool theory of abiogenesis
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Re: A cool theory of abiogenesis         

Group: sci.bio.evolution · Group Profile
Author: dkomo
Date: Feb 1, 2008 10:32

Perplexed in Peoria wrote:
> "J.A.Legris" wrote in message news:fnqeoq$1t88$1@darwin.ediacara.org...
>
>>On Jan 29, 1:48 pm, dkomo comcast.net> wrote:
>>
>>>Did Life Begin in Ice?
>>>
>>>February 20008 issue of "Discover" magazine
>>>
>>>"One morning in late 1997, Stanley Miller lifted a glass vial from a
>>>cold, bubbling vat. For 25 years he had tended the vial as though it
>>>were an exotic orchid, checking it daily, adding a few pellets of dry
>>>ice as needed to keep it at -108 degrees Farenheit. He had told hardly
>>>a soul about it. Now he set the frozen time capsule out to thaw, ending
>>>the experiment that had lasted more than one-third of his 68 years."
>>>
>>>The vial contained cyanide and ammonia. When Miller and his former
>>>student Jeffrey analyzed the contents, they found it contained
>>>nucleotides and amino acids.
>>>
>>>Who'd have thunk it?
>
>
> Not me. I'm reasonably certain the mix contained nucleic acid bases
> such as adenine rather than nucleotides such as adenosine.
>

Actually, adenosine is a nucleoside, not a nucleotide:

http://www.answers.com/topic/nucleoside?cat=health

A nucleotide would require a phosphate group in addition. That would be
a pretty good trick, getting phosphorus from the initial mix of cyanide
and ammonia. Alchemy, anyone?

The Discover article used the term "nucleobase" throughout. I changed
it to "nucleotide" thinking it meant the same thing. It doesn't, and I
got bit:

http://en.wikipedia.org/wiki/Nucleobase

--dkomo@cris.com
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