1446470-38-7Relevant articles and documents
New synthetic substrates of mammalian nucleotide excision repair system
Evdokimov, Alexey,Petruseva, Irina,Tsidulko, Aleksandra,Koroleva, Ludmila,Serpokrylova, Inna,Silnikov, Vladimir,Lavrik, Olga
, p. e123 (2013/08/23)
DNA probes for the studies of damaged strand excision during the nucleotide excision repair (NER) have been designed using the novel non-nucleosidic phosphoramidite reagents that contain N-[6-(9-antracenylcarbamoyl)hexanoyl]-3- amino-1,2-propandiol (nAnt) and N-[6-(5(6)-fluoresceinylcarbamoyl)hexanoyl]-3- amino-1,2-propandiol (nFlu) moieties. New lesion-imitating adducts being inserted into DNA show good substrate properties in NER process. Modified extended linear nFlu- and nAntr-DNA are suitable for estimation of specific excision activity catalysed with mammalian whole-cell extracts. The following substrate activity range was revealed for the model 137-bp linear double-stranded DNA: nAnt-DNA ≈ nFlu-DNA > Chol-DNA (Chol-DNA - legitimate NER substrate that contains non-nucleoside fragment bearing cholesterol residue). In vitro assay shows that modified DNA can be a useful tool to study NER activity in whole-cell extracts. The developed approach should be of general use for the incorporation of NER-sensitive distortions into model DNAs. The new synthetic extended linear DNA containing bulky non-nucleoside modifications will be useful for NER mechanism study and for applications.