Ribose

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Tero
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Ribose

Post by Tero » Wed Jun 19, 2013 1:30 am

Origin of ribose explained. Talk origins has the jpg
Image

The five membered heterocycle reacts with the three carbon aldehyde. The original thinking is crossed out., adenine plus ribose.
Paper was in
Szostak JW (2009) Systems chemistry on early Earth. Nature 459: 171-172

I've lost the talk origins page but Szostak should locate it.
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Re: Ribose

Post by Tero » Wed Jun 19, 2013 3:15 am

Sorry. Cytosine plus ribose, the way we would put the parts together in the lab. It's neat that the phosphate is part of the mechanism of opening the tricyclic intermediate to cytidine.
https://esapolitics.blogspot.com
http://esabirdsne.blogspot.com/
Said Peter...what you're requesting just isn't my bag
Said Daemon, who's sorry too, but y'see we didn't have no choice
And our hands they are many and we'd be of one voice
We've come all the way from Wigan to get up and state
Our case for survival before it's too late

Turn stone to bread, said Daemon Duncetan
Turn stone to bread right away...
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Re: Ribose

Post by JimC » Wed Jun 19, 2013 4:23 am

Can I have mine de-oxyed, please... :tea:
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Re: Ribose

Post by Tero » Wed Jun 19, 2013 11:36 am

After the first billion years.
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Re: Ribose

Post by Tero » Wed Jun 19, 2013 12:49 pm

We had to evolve ribonucleotide reductase first. It takes the ribose nucleotides and plucks off the 2-OH. See Wiki for the enzyme. Or google JoAnne Stubbe.

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