Difference between revisions of "Part:BBa K2549028"
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<partinfo>BBa_K2549028 short</partinfo> | <partinfo>BBa_K2549028 short</partinfo> | ||
| − | This part is one of the response elements of our amplifier, also executing the combiner function. 8*ZF43.8 binding sites is assembled using two 4*ZF43.8 binding sites ([[Part:BBa_K2446006]]) with a biobrick scar between them. Minimal CMV ([[Part:BBa_K2549049]]) is a promotor providing very low basal expression and high maximal expression after induction. This part can switch on the expression of gene downstream after induced by our zinc finger-based transcription activator. | + | This part is one of the response elements of our amplifier, also executing the combiner function. 8*ZF43.8 binding ([[Part:BBa_K2446013]]) sites is assembled using two 4*ZF43.8 binding sites ([[Part:BBa_K2446006]]) with a biobrick scar between them. Minimal CMV ([[Part:BBa_K2549049]]) is a promotor providing very low basal expression and high maximal expression after induction. This part can switch on the expression of gene downstream after induced by our zinc finger-based transcription activator. |
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| + | <span class='h3bb'>Sequence and Features</span> | ||
| + | <partinfo>BBa_K2549028 SequenceAndFeatures</partinfo> | ||
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<!-- Add more about the biology of this part here --> | <!-- Add more about the biology of this part here --> | ||
===Biology=== | ===Biology=== | ||
| − | ==== | + | =====Our characterization===== |
| − | + | [[File:aTF-test.png|none|420px|thumb|'''Interaction between transcriptional activators and their binding sites.''' A degradable EGFP (d2EGFP) is produced downstream the promoter to indicate the output strength. Experiments were conducted and analyzed as previous reported<ref>http://2017.igem.org/Team:Fudan/Demonstrate</ref>. DBD, DNA binding domain which is zinc finger in our assay. AD, activating-form transcriptional domain; we used VP64 for the experiments in this figure. RE, responsive elements. MFI, median fluorescence intensity.]] | |
| − | + | Flow cytometry results suggest that the transcriptional activators can specifically activate the promoters with responsive elements, orthogonally. Please visit http://2018.igem.org/Team:Fudan/Demonstration for a brief introduction of our project. | |
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| + | =====Synthetic promotor operators regulated by artificial zinc finger-based transcription factors===== | ||
| + | Khalil AS et al have reported several synthetic promotor operators which can interact with artificial zinc finger-based transcription factors with high specificity and high orthogonality<ref>A synthetic biology framework for programming eukaryotic transcription functions. Khalil AS, Lu TK, Bashor CJ, ..., Joung JK, Collins JJ. Cell, 2012 Aug;150(3):647-58 PMID: 22863014; DOI: 10.1016/j.cell.2012.05.045</ref>. | ||
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| + | [[File:ZF2.jpg|none|240px|thumb|Khalil AS et al stated:''sTFs constructed from OPEN-engineered ZFs are orthogonal to one another. sTF43-8 activated noncognate Promoter21-16 due to the fortuitous creation of a sequence that is significantly similar to the binding sequence of 43-8, when the downstream BamHI restriction site is considered.'']] | ||
<!-- Uncomment this to enable Functional Parameter display | <!-- Uncomment this to enable Functional Parameter display | ||
===Functional Parameters=== | ===Functional Parameters=== | ||
<partinfo>BBa_K2549028 parameters</partinfo> | <partinfo>BBa_K2549028 parameters</partinfo> | ||
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===References=== | ===References=== | ||
Latest revision as of 19:32, 17 October 2018
8*ZF43.8-minCMV
This part is one of the response elements of our amplifier, also executing the combiner function. 8*ZF43.8 binding (Part:BBa_K2446013) sites is assembled using two 4*ZF43.8 binding sites (Part:BBa_K2446006) with a biobrick scar between them. Minimal CMV (Part:BBa_K2549049) is a promotor providing very low basal expression and high maximal expression after induction. This part can switch on the expression of gene downstream after induced by our zinc finger-based transcription activator.
Sequence and Features
Assembly Compatibility:
- 10COMPATIBLE WITH RFC[10]
- 12COMPATIBLE WITH RFC[12]
- 21COMPATIBLE WITH RFC[21]
- 23COMPATIBLE WITH RFC[23]
- 25COMPATIBLE WITH RFC[25]
- 1000COMPATIBLE WITH RFC[1000]
Biology
Our characterization
Interaction between transcriptional activators and their binding sites. A degradable EGFP (d2EGFP) is produced downstream the promoter to indicate the output strength. Experiments were conducted and analyzed as previous reported[1]. DBD, DNA binding domain which is zinc finger in our assay. AD, activating-form transcriptional domain; we used VP64 for the experiments in this figure. RE, responsive elements. MFI, median fluorescence intensity.
Flow cytometry results suggest that the transcriptional activators can specifically activate the promoters with responsive elements, orthogonally. Please visit http://2018.igem.org/Team:Fudan/Demonstration for a brief introduction of our project.
Synthetic promotor operators regulated by artificial zinc finger-based transcription factors
Khalil AS et al have reported several synthetic promotor operators which can interact with artificial zinc finger-based transcription factors with high specificity and high orthogonality[2].
Khalil AS et al stated:sTFs constructed from OPEN-engineered ZFs are orthogonal to one another. sTF43-8 activated noncognate Promoter21-16 due to the fortuitous creation of a sequence that is significantly similar to the binding sequence of 43-8, when the downstream BamHI restriction site is considered.