Part:BBa_K4438124
FASTmiR-222-D5_s
FASTmiR stands for Fluorescence Aptamer Sensor For Tracking miRNAs. It is an RNA-based sensor for in-vitro quantification of miRNAs. This part is the expression cassette for BBa_K4438104 with BBa_J64997 upstream and BBa_K731721 downstream along with some spacer sequences BBa_K3831027 (at 5’ end) and BBa_K4438136 (at 3’ end). FASTmiR-222-D5_s, after transcription, binds to miR-222, the transcription product of BBa_K4438150. The binding of these to RNAs will lead to the revelation of a binding site for DFHBI, a fluorophore, where it gets trapped and shows fluorescence.
Usage and Biology
This part can be used for the detection of miR-222, which proves to be a biomarker for many diseases. A promoter sequence added in the beginning enhances its usage in both in-vivo and in-vitro conditions. The OFF(A) and ON(B) structure for the sensor was generated as given:
Sequence and Features
- 10INCOMPATIBLE WITH RFC[10]Illegal SpeI site found at 81
- 12INCOMPATIBLE WITH RFC[12]Illegal SpeI site found at 81
- 21COMPATIBLE WITH RFC[21]
- 23INCOMPATIBLE WITH RFC[23]Illegal SpeI site found at 81
- 25INCOMPATIBLE WITH RFC[25]Illegal SpeI site found at 81
- 1000COMPATIBLE WITH RFC[1000]
Notes
The split position of the complementary sequence in the sensor is ACCCAGT……AGCCAGAGTGAGCT
References
Huang, K., Doyle, F., Wurz, Z. E., Tenenbaum, S. A., Hammond, R. K., Caplan, J. L., & Meyers, B. C. (2017). FASTmiR: an RNA-based sensor for in vitro quantification and live-cell localization of small RNAs. Nucleic acids research, 45(14), e130-e130
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