Composite

Part:BBa_K3292004

Designed by: Abril Diosdado Hernandez,Gerardo David Diaz Renovado, José Arnulfo Juárez Figueroa   Group: iGEM19_Tec-Monterrey   (2019-10-16)


6His-tagged Super Folding GFP with terminator

This part is an improvement of the BBa_I746916 which allows you to choose which is the better option for your protein either to purify it with an affinity column or just to take it from the medium.


Improvement of BBa_I746916 by iGEM TecMonterrey

The BioBrick BBa_I746916 corresponds to the coding sequence for the sfGFP. According to Zhang et al. (2019), this protein presents an auto-secretory activity, and can also secrete other proteins when linked to them. Based on this, we decided to improve this part by adding a 6x His-tag to facilitate other teams the recovery of proteins of interest, and compare it with other traditional purification methods.

To characterize this improvement we first performed a fluorescence assay in order to observe the production of this protein by induction with IPTG at different concentrations. In addition, we performed an SDS-PAGE to observe our expressed protein under the same induction conditions by different concentrations of IPTG.


800px-T--Tec-Monterrey--demostrate-grafica.png

Figure 1 (Fluorescence essay) Fluorescence vs time of sfGFP production induced at 0, 40, 200 and 400μM.

800px-T--Tec-Monterrey--results-gelnufo.jpg.png

Figure 2 (SDS-Page). SDS-PAGE from left to right the samples are, the lysate of an induced E. Coli producing the sfGFP, 20mM Imidazole fraction of Ni=NTA purification,

sfGFP 150mM Imidazole elution fraction, supernatant from sfGFP producer, negative control (an E. Coli transformed with a Psb1c3 only containing a promoter between

the prefix and suffix), sialidase induced supernatant and non induced supernatant, and an sfGFP non induced. Induction was done at 400μM.


Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    COMPATIBLE WITH RFC[25]
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal SapI.rc site found at 13


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