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Updated: Jun 3, 2026
08:04
Preparation of Functional Silica Using a Bioinspired Method
Published on: August 1, 2018
On the stabilization of ribose by silicate minerals
Álvaro Vázquez-Mayagoitia1, Scott R Horton, Bobby G Sumpter
11 Chemistry Department, University of Tennessee, Knoxville, Tennessee, USA.
Astrobiology
|March 12, 2011
Summary
Early life may have used RNA, but ribose instability was a problem. Silicate minerals stabilize ribose, suggesting RNA
Area of Science:
- Astrobiology
- Biochemistry
- Geochemistry
Background:
- The RNA-world hypothesis suggests early life relied on RNA.
- Ribose, a key RNA component, is known for its instability.
- Silicate-mediated formose reactions may stabilize ribose.
Purpose of the Study:
- To investigate the stability of silicate complexes of various sugars.
- To determine which sugar-silicate complex forms preferentially in a formose reaction.
Main Methods:
- Quantum chemical calculations were employed.
- The relative stability of arabinose, lyxose, ribose, and xylose silicate complexes was assessed.
- Five stereoisomers were analyzed for each sugar-silicate complex.
Main Results:
- The 2:1 ribose-silicate stereoisomers were found to be the most stable.
- The least stable 2:1 ribose-silicate complex was more stable than the most stable complexes of other sugars.
- Silicate minerals preferentially stabilize ribose over other sugars.
Conclusions:
- A formose-like reaction with silicate minerals thermodynamically favors ribose-silicate complex formation.
- This finding supports the RNA-world hypothesis by addressing ribose stability.
- Silicate minerals are crucial for the prebiotic formation of RNA components.
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