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Apta-Index™: 14-16 (ID# 501)

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14-16 (ID# 501)

* The secondary structure may not be accurate because of MFOLD limitations on chemistries other than RNA/DNA.
2'-F-RNA Mouse P68 RNA Helicase (Ddx5) Protein 30.8 nM (reported value) For selection: 5 nmol of aptamer pool in 200 µl of PBS, injected systemically and allowed to circulate for 20 minutes For binding assay: 10 mM Tris-HCl (pH 7.0), 150 mM NaCl, 10% (v/v) glycerol, 2.5 µg/ml tRNA. 10 minute incubation at 37°C For affinity purification: 20 mM HEPES (pH 7.4), 150 mM NaCl, 2 mM CaCl2, 0.1% BSA, 0.1 µM tRNA at 4°C for 2 hours N/A Has better affinity for HA-tagged version of human p68 protein (13.8 nM), but only has an affinity of 190 nM for HA-tagged Tenascin CD. ATPase activity was significantly decreased in the presence of aptamer 14-16. IC50 of aptamer was 0.78 µM compared to that of the library (3.63 µM). An additional “U” nucleotide is present at position 55 in supplementary Figure 1-b and in the later-published version of the paper available at This sequence was used to predict the secondary structure.
5'-rGprGprGp rAprGprGp rApfCprGp rApfUprGp fCprGprGp fCprAprGp fUprGpfCp fCpfCprAp rApfCpfCp rGprGprAp rApfCprAp rApfCprAp rApfCpfCp rApfCpfCp rGprGpfCp rGprGpfCp fUpfCpfCp fUprGpfCp fUpfCprAp rGprApfCp rGprApfCp fUpfCprGp fCpfUprGp rAprGprGp rApfUpfCp fCprGprAp rGprAp-3'
80 25949.66 g/mole 769500.00 L/(mole·cm) 65.00% 1.30 33.72

Note: Information on this aptamer oligo was obtained from the literature and hasn't been validated by Aptagen.

Mi et al. “In vivo selection of tumor-targeting RNA motifs”. Nature Chemical Biology 1(2010): 22-24. DOI: 10.1038/NCHEMBIO.277

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