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

Vera M. Kolb; William Zhu

doi:10.1117/12.568331

1 November 2004 Complexes of ribose with silicates, borates, and calcium: implications to astrobiology

Vera M. Kolb, William Zhu

Author Affiliations +

Proceedings Volume 5555, Instruments, Methods, and Missions for Astrobiology VIII; (2004) https://doi.org/10.1117/12.568331
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

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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Vera M. Kolb and William Zhu "Complexes of ribose with silicates, borates, and calcium: implications to astrobiology", Proc. SPIE 5555, Instruments, Methods, and Missions for Astrobiology VIII, (1 November 2004); https://doi.org/10.1117/12.568331

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