Difference between revisions of "Part:BBa K1031622"

 
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106-NahF-TT
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== '''Characterization''' ==
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In order to fine-tune the performance of NahF adapter for NahR biosensor, we constructed a library of ''Pc'' constitutive promoters at different intensity. BBa_K1031621 is composed of three elements, the constitutive ''Pc'' promoter J23106[https://parts.igem.org/Part:BBa_J23105], coding sequence of NahF and terminator B0015[https://parts.igem.org/Part:BBa_B0015]. ('''Fig 1''')
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<img src="https://static.igem.org/mediawiki/igem.org/2/2a/Peking2013_part_105-NahF.png", width=450px; />
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'''Fig 1''' Construction of adapter circuit ''Pc''/J23105-NahF
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== '''Sequence and Features''' ==
  
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===Usage and Biology===
 
  
 
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<span class='h3bb'>Sequence and Features</span>
 
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== '''Data shown''' ==
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It is necessary to fine-tune the expression level of NahF in ''E.coli''. We built a library of constitutive promoters for tuning the expression of NahF, and NahR biosensor was used to detect the possible salicylates transformed from salicylaldehydes ('''Fig 2a'''). The dashed box refers to data for ''Pm''/J23105-XylS biosensor circuit ('''Fig 2b''')
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<img src="https://static.igem.org/mediawiki/igem.org/0/07/Peking2013_Plugin_fig8.jpg", width=450; />
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'''Fig 2'''  Construction and test results of NahR biosensor equipped with NahF adapter
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'''a'''. Schematic diagrams for the plasmid circuits used as Adaptor: NahF and the Sensor: NahR. A constitutive promoter library for the expression of NahF was constructed to obtain the most appropriate expression level of NahF enzyme in E.coli. The number of the Standard Biological constitutive promoter Parts used in this study and its initiation strength is listed in the left portion of the figure. Promoters are presented in orange, RBS in light green, coding sequence in dark cyan, and terminators in dark red.intensity
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'''b'''. Horizontal axis stands for NahR biosensor equipped with NahF adapters adopting ''Pc'' promoters of different strength. The expression intensity of these constitutive promoters, J23113, J23109, J23114, J23105, J23106 is 21, 106, 256, 623, and 1185, respectively, according to the Part registry. Two kinds of aromatics, namely ... and ..., shown with different color intensities, were tested following Test Protocol 1 [1]. Vertical axis represents the ON/OFF induction ratio. The dashed box refers to performance for ''Pc''/J23105-NahF adapter circuit
  
  
 
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===Functional Parameters===
 
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Revision as of 18:36, 24 September 2013

J23106-NahF-Terminator


Characterization

In order to fine-tune the performance of NahF adapter for NahR biosensor, we constructed a library of Pc constitutive promoters at different intensity. BBa_K1031621 is composed of three elements, the constitutive Pc promoter J23106[1], coding sequence of NahF and terminator B0015[2]. (Fig 1)

Fig 1 Construction of adapter circuit Pc/J23105-NahF


Sequence and Features

Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    INCOMPATIBLE WITH RFC[12]
    Illegal NheI site found at 7
    Illegal NheI site found at 30
  • 21
    INCOMPATIBLE WITH RFC[21]
    Illegal BglII site found at 906
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal NgoMIV site found at 1144
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal BsaI site found at 1042
    Illegal BsaI.rc site found at 1196


Data shown

It is necessary to fine-tune the expression level of NahF in E.coli. We built a library of constitutive promoters for tuning the expression of NahF, and NahR biosensor was used to detect the possible salicylates transformed from salicylaldehydes (Fig 2a). The dashed box refers to data for Pm/J23105-XylS biosensor circuit (Fig 2b)

Fig 2 Construction and test results of NahR biosensor equipped with NahF adapter a. Schematic diagrams for the plasmid circuits used as Adaptor: NahF and the Sensor: NahR. A constitutive promoter library for the expression of NahF was constructed to obtain the most appropriate expression level of NahF enzyme in E.coli. The number of the Standard Biological constitutive promoter Parts used in this study and its initiation strength is listed in the left portion of the figure. Promoters are presented in orange, RBS in light green, coding sequence in dark cyan, and terminators in dark red.intensity b. Horizontal axis stands for NahR biosensor equipped with NahF adapters adopting Pc promoters of different strength. The expression intensity of these constitutive promoters, J23113, J23109, J23114, J23105, J23106 is 21, 106, 256, 623, and 1185, respectively, according to the Part registry. Two kinds of aromatics, namely ... and ..., shown with different color intensities, were tested following Test Protocol 1 [1]. Vertical axis represents the ON/OFF induction ratio. The dashed box refers to performance for Pc/J23105-NahF adapter circuit