title: [Structure of a single-stranded DNA target as a factor influencing the effectiveness of its modification with a complementary reagent].
abstract: Site directed alkylation of three oligonucleotide targets: 41-mer (hairpin structure), 22-mer (loop part of this hairpin) and 10-mer (part of the loop) with 5'-p-(N-2-chloroethyl-N-methylamino)benzylamides of oligonucleotides complementary to the loop region was studied. Thermodynamic parameters of the interaction were estimated using the dependence of the limit modification extent on the reagent concentration at different temperatures. The stability of the complex increases much in the set: 302-mer carrying the above hairpin, 41-mer, 22-mer; data on 22-mer and 10-mer being almost identical. This indicates significant influence of the loop supporting structure on the interaction with antisense reagents.
authors.forename: O S
authors.initials: OS
authors.lastname: Fedorova
authors.forename: L M
authors.initials: LM
authors.lastname: Podust
authors.forename: V V
authors.initials: VV
authors.lastname: Gorn
authors.forename: G A
authors.initials: GA
authors.lastname: Maksakova
mesh_terms: D000478:Alkylation; D001483:Base Sequence; D004277:DNA, Single-Stranded / Q000737:chemistry*; D007202:Indicators and Reagents; D008969:Molecular Sequence Data; D009841:Oligonucleotides / Q000737:chemistry*
chemical_list: D004277:DNA, Single-Stranded; D007202:Indicators and Reagents; D009841:Oligonucleotides
vernacular_title: Stroenie odnotsepochechnoĭ DNK-misheni kak faktor, vliiaiushchiĭ vliiaiushchiĭ na éffektivnost' ee modifikatsii v komplekse s komplementarnym reagentom.