Difference between revisions of "Part:BBa K1800001"

(→‎Team INSA-UPS France 2017: usage of BBa_K1800001 in Pichia pastoris strain to secrete antimicrobial peptides)
(→‎Team INSA-UPS France 2017: usage of BBa_K1800001 in Pichia pastoris strain to secrete antimicrobial peptides)
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We fusionnate the alpha secretion factor with an antimicrobial peptide (AMP). The construction was put under the control of a pGAP promoter (<a href="https://parts.igem.org/Part:BBa_K431007">BBa_K431007</a>BBa_K431009).  
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We fusionnate the alpha secretion factor with an antimicrobial peptide (AMP). The construction was put under the control of a pGAP promoter (<a href="https://parts.igem.org/Part:BBa_K431007">BBa_K431009</a>).  
 
<p>The construction was cloned in pPICZalpha vector and has been integrated in <i>Pichia pastoris</i> thanks to pAOXI (<a href="https://parts.igem.org/Part:BBa_K431007">BBa_K431007</a>) genomic homology region.  
 
<p>The construction was cloned in pPICZalpha vector and has been integrated in <i>Pichia pastoris</i> thanks to pAOXI (<a href="https://parts.igem.org/Part:BBa_K431007">BBa_K431007</a>) genomic homology region.  
  

Revision as of 20:34, 23 October 2017

Alpha-Factor Secretion Signal

The factor secretion signal is a N-terminal secretion signal from S. cerevisiae alpha factor intended to be used to create fusion proteins

Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    INCOMPATIBLE WITH RFC[21]
    Illegal XhoI site found at 244
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    COMPATIBLE WITH RFC[25]
  • 1000
    COMPATIBLE WITH RFC[1000]



Team INSA-UPS France 2017: usage of BBa_K1800001 in Pichia pastoris strain to secrete antimicrobial peptides

We fusionnate the alpha secretion factor with an antimicrobial peptide (AMP). The construction was put under the control of a pGAP promoter (BBa_K431009).

The construction was cloned in pPICZalpha vector and has been integrated in Pichia pastoris thanks to pAOXI (BBa_K431007) genomic homology region.

The functionality of the signal factor was investigated by demonstrating that AMP are present in the supernatant through a toxicity assay. The engineered yeast was used in a halo assay against V. harveyi as the target of AMPs. A paper soacked with a yeast supernantant solution was placed on the plate and V. harveyi growth in the viscinity of the yeast patch was followed:

AMP halo assay: Positive control was performed with chloramphenicol (25 g/L), the negative control was performed with the empty plasmid integrated in P. pastoris, the assay was performed using the plasmid containing BBa_K2278021 driving D-NY15 secretion integrated in P. pastoris.

We can observe a significant inhibition halo meaning that the AMP have been secreted thanks to the alpha factor.