Types | DnaRegion
|
Roles | promoter
Regulatory
|
Sequences | BBa_M50048_sequence (Version 1)
|
Description
This is a riboswitch consisting of an RNA aptamer that recognizes atrazine, and a ribosome binding site. It is based on BBa_K784005, with the theophylline aptamer exchanged for an atrazine aptamer. In the absence of atrazine, the RNA transcript of this part has excessive base pairing in the 5??? UTR, folding the RNA to block binding at the RBS and thus prevent translation. When atrazine is present, it binds to the aptamer sequence, altering the shape of the transcript to expose the RBS and allow translation of any downstream protein sequences.
Notes
We had to replace the aptamer in the original riboswitch with an aptamer that would target our molecule of interest.
Source
Riboswitch components: http://parts.igem.org/Part:BBa_K784005
Atrazine aptamer:
Williams, R., Crihfield, C., Gattu, S., Holland, L., & Sooter, L. (2014). In Vitro Selection of a
Single-Stranded DNA Molecular Recognition Element against Atrazine. IJMS International
Journal of Molecular Sciences, 15(8), 14332-14347. doi:10.3390/ijms150814332