Difference between revisions of "Part:BBa K3505037"
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===Usage and Biology===
 
===Usage and Biology===
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This parts consists of AndersonJ23115:TetR:Double Terminator <bbpart>BBa_K3505033</bbpart>  and AndersonJ23115:TetO:RBS-LacI-Double Terminator <bbpart>BBa_K3505034</bbpart>. By this way ,as AndersonJ23115 is a strong constitutive promoter, TetR is constitutively expressed and binds to tet operator, inhibits the expression of a LacI.
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This parts consists of AndersonJ23115:TetR:Double Terminator <bbpart>BBa_K3505033</bbpart>  and AndersonJ23115:TetO:RBS-LacI-Double Terminator <bbpart>BBa_K3505034</bbpart>.  AndersonJ23115 is a strong constitutive promoter and TetR is constitutively expressed. TetR binds to tet operator, and inhibits the expression of LacI.
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In the presence of tetracycline or  strong chemical repressor as anhydrotetracycline (aTC), TetR inhibition is blocked and the transcription of LacI is allowed.
  
 
===Design Notes===
 
===Design Notes===

Revision as of 17:44, 27 October 2020


pAndersonJ23115:RBS-TetR-terminator- pAndersonJ23115:tetO:RBS-LacI-terminator

long


Usage and Biology

This parts consists of AndersonJ23115:TetR:Double Terminator BBa_K3505033 and AndersonJ23115:TetO:RBS-LacI-Double Terminator BBa_K3505034. AndersonJ23115 is a strong constitutive promoter and TetR is constitutively expressed. TetR binds to tet operator, and inhibits the expression of LacI. 

In the presence of tetracycline or  strong chemical repressor as anhydrotetracycline (aTC), TetR inhibition is blocked and the transcription of LacI is allowed.

Design Notes

The coding sequence was domesticated . We removed BsmBI ,BsaI , BtgZI, BpiI sites in order to be compatible with GoldenBraid and MoClo. The sequence is cloned in omega1 vector BBa_K3505010 and has overhangs compatible for Golden Braid cloning.

Figure 2. The level B module of Tet-Off system : a1R:AndersonJ23115:RBS-TetR-Double terminator-a2:AndersonJ23115:TetO:RBS- LacI-Double terminator

Verification of Cloning

Fig.1:: (U=Uncut , C= Cut) Restriction digestion of omega1R-TetR-LacI (C1-C 4) with :EcoRV +EcoRI(C1-C4) , Expected bands : 4823 + 465bp ,Positive result: C1,C2,C3,C4

Sequence and Features


Assembly Compatibility:
  • 10
    INCOMPATIBLE WITH RFC[10]
    Illegal XbaI site found at 76
  • 12
    INCOMPATIBLE WITH RFC[12]
    Illegal NheI site found at 11
    Illegal NheI site found at 34
    Illegal NheI site found at 838
    Illegal NheI site found at 861
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    INCOMPATIBLE WITH RFC[23]
    Illegal XbaI site found at 76
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal XbaI site found at 76
  • 1000
    COMPATIBLE WITH RFC[1000]