Composite

Part:BBa_K3893009

Designed by: Tannya Sandoval   Group: iGEM21_Ecuador   (2021-10-01)


Down part of cassette for dsRNA constitutive production 1


Part of Modular Platform for dsRNA production.


Lower part of the cassette for constitutive dsRNA production, which is composed of a terminator BBa_K3893006, promoter T7 BBa_K3893020, RBS BBa_K3893019 and GFP transcription unit that functions as a dropout BBa_K3893018.


Assembly system

Before constructing the modified plasmids and using them, we took into account the following:

  • Have a Biobrick-compatible backbone, in case you don't have it you could modify it with PCR overhang and add RFC10 prefix and suffix.
  • The following restriction enzymes are used: EcoRI, PstI, SpeI, XbaI, BglII and KpnI. Therefore the dsRNA sequence should not contain these restriction sites.
  • Previously carry out PCR overhang to the dsRNA sequence to add the restriction sites: BglII and KpnI.

Once the above considerations have been met, the following assemblies are performed:

1. We synthesized the up (UP) and down (DP) parts and cloned them into Biobrick-compatible backbones with EcoRI and PstI.

domestication.
Step 1

2. Assembly 3A adapted: We digested the UP plasmid with EcoRI - SpeI, the DP plasmid with XbaI - PstI and a Biobrick compatible backbone with EcoRI - PstI. Then we ligated and obtained as a product the modified plasmid (dsRNA receptor).

domestication.
Step 2

3. We inserted the dsRNA into the plasmid by digesting and ligating both sequences with BglII and KpnI.

domestication.
Step 3


Sequence and Features


Assembly Compatibility:
  • 10
    INCOMPATIBLE WITH RFC[10]
    Illegal XbaI site found at 798
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    INCOMPATIBLE WITH RFC[23]
    Illegal XbaI site found at 798
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal XbaI site found at 798
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal BsaI.rc site found at 698


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