| Autor: |
Fakhrai, H., Roode, J., Orgel, L. |
| Zdroj: |
Journal of Molecular Evolution; 1981, Vol. 17 Issue 5, p295-302, 8p |
| Abstrakt: |
Short oligocytidylates can act as templates for the self-condensation of guanosine 5′-phosphorimidazolide. In the absence of a catalytic metal ion or in the presence of Pb a noticeable template effect is already observed with the dimer and the yield of long oligomers reaches a plateau with a hexamer template. Short templates give oligomers longers than the template length. The products are predominantly 2′-5′ linked for the Pb-catalyzed reaction while mixed linkages are observed in the uncatalyzed reaction. In the presence of Zn, a template effect is first observed with the pentamer and is maximal by the heptamer. The products are predominantly 3′-5′ linked. Oligomers shorter than or as long as the template are obtained in substantial yield, and longer products in much lower yields. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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