id author title date pages extension mime words sentences flesch summary cache txt cord-000293-pc4x5e24 Yu, Chien-Hung Stimulation of ribosomal frameshifting by antisense LNA 2010-08-06 .txt text/plain 3901 194 49 The requirements for À1 ribosomal frameshifting are the presence of a slippery heptanucleotide sequence X XXY YYZ (where X can be A, U, G or C; Y can be A or U; and Z does not equal Y; the spaces indicate the original reading frame) (8) followed by a downstream structural element, such as a pseudoknot, a hairpin or an antisense oligonucleotide duplex [for reviews, see (9) ]. We and others have demonstrated that small RNA oligonucleotides are able to mimic the function of frameshifter pseudoknots or hairpins by redirecting ribosomes into new reading frames (27, 28) . These results demonstrate that LNA modifications indeed enhance the antisense-induced frameshifting efficiency probably due to higher thermodynamic stability and RNA-like structural properties. In addition to RNA oligonucleotides, we demonstrated that LNA/DNA mix-mers are also capable of stimulating efficient À1 ribosomal frameshifting in contrast to DNA oligonucleotides. Triplex structures in an RNA pseudoknot enhance mechanical stability and increase efficiency of À1 ribosomal frameshifting ./cache/cord-000293-pc4x5e24.txt ./txt/cord-000293-pc4x5e24.txt