Complexes of ribose with silicates, borates, and calcium: implications to astrobiology

Details Complexes of ribose with silicates, borates, and calcium: implications to astrobiology Complexes of ribose with silicates, borates, and calcium: implications to astrobiology

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5555...70k&link_type=abstract

Instruments, Methods, and Missions for Astrobiology VIII. Edited by Hoover, Richard B.; Levin, Gilbert V.; Rozanov, Alexei Y.

Biology

1

Scientific paper

Ribose readily makes complexes with borates, silicates, and calcium. Borate and silicate complexes stabilize and preserve ribose under simulated prebiotic conditions. We report here the C-13 NMR study of the ribose calcium complexes. Calcium ions form complex with teh beta-furanose form of ribose, which is biologically relevant, in the following way. The C-2 and C-3 hydroxyl groups get involved in making the complex, while the C-1 OH remains uninvolved. This allows the C-1 OH, which is the most reactive, anomeric hyroxyl, to react further to make prebiotic nucleosides. Thus, the complexation of calcium with ribose may be responsible for the selection of the beta-furanose form in biology.

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