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Studies on precellular evolution - The encapsulation of polyribonucleotides by liposomes (1986)

Baeza, I. ; Ibanez, M. ; Lazcano, A. ; [et al.]

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Publication Date: 2019-07-12

Description: Liposomes have been suggested as possible models of precellular systems formed in the early Archean earth from lipids of nonenzymatic origin. Since it is generally accepted that RNA molecules preceded double-stranded DNA molecules as genetic material, the encapsulation of polyribonucleotides within liposomes (made from dipalmitoyl phosphatidylcholine and from egg yolk phosphatidylcholine) was studied. Quantitative determinations show that approximately 50 percent of the available lipids form liposomes, and that up to 5 percent of the polyribonucleotides can be entrapped by them. Also studied was the encapsulation of polyribonucleotides in the presence of urea and cyanamide and of Zn(2+) and Pb(2+).

Keywords: SPACE BIOLOGY

Type: Advances in Space Research (ISSN 0273-1177); 6; 11 1

Format: text

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