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Bioconjug Chem ; 14(5): 919-26, 2003.
Article in English | MEDLINE | ID: mdl-13129394

ABSTRACT

5-Aminoallyl-2'-fluoro-dUTP, 5-aminoallyl-UTP, and N(6)-([6-aminohexyl]carbamoylmethyl)-ATP were systematically tested for their suitability for the systematic evolution of ligands by exponential enrichment (SELEX) process with the aim of introducing additional functionalities to RNA libraries. All three aminomodified nucleoside triphosphates proved to be compatible with the enzymatic steps required for SELEX and maintained strict Watson-Crick basepairing. Complementary RNA molecules modified with the two uridine analogues show a significantly increased melting temperature, whereas the introduction of N(6)-([6-aminohexyl]carbamoylmethyl)-ATP leads to a decreased T(m) and thus less stable basepairing. The chemical synthesis of 5-aminoallyl-2'-fluoro-dUTP is reported in detail.


Subject(s)
Adenosine Triphosphate/chemistry , Sequence Analysis, RNA/methods , Uridine Triphosphate/chemistry , Adenosine Triphosphate/genetics , Animals , Base Sequence , Cattle , Crotalid Venoms , Crotalus , Gene Library , RNA/analysis , RNA/chemistry , RNA/genetics , Uridine Triphosphate/genetics
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