Difference between revisions of "Team:DTU-Denmark/Project/Overview"

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<a href="/Team:DTU-Denmark/Project/Overview"
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  >Overview
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                                          </a></li>
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<a href="/Team:DTU-Denmark/Project/Background"
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  >Background
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                                          </a></li>
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<li >
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<a href="/Team:DTU-Denmark/Project/MAGE"
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  >MAGE Subtilis
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                                          </a></li>
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<a href="/Team:DTU-Denmark/Project/Surfactin"
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  >Surfactin
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                                          </a></li>
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<a href="/Team:DTU-Denmark/Project/Tyrocidine"
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  >Tyrocidine
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                                          </a></li>
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<li >
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<a href="/Team:DTU-Denmark/Project/Chip"
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  >Lab-on-a-disc
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                                          </a></li>
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<li >
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<a href="/Team:DTU-Denmark/Project/Intein"
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  >Inteins
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                                          </a></li>
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<li >
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<a href="/Team:DTU-Denmark/Project/Detection"
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  >Detection of NRP
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                                          </a></li>
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<a href="/Team:DTU-Denmark/Project/POC_MAGE"
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  >Proof of concept of MAGE in B. subtilis
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                                          </a></li></ul></li>
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  >Characterization of xylR
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            <h3><br></h3>
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<h3><br></h3>
            <h1>Overview</h1>
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<h1>Overview</h1>
           
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      <h1 id="Project">Project</h1>
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  Introduction
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</h1>
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    <h1>
<p>Over the summer we worked with nonribosomal peptide synthetases (NRPSs). We developed a&nbsp;<em>B. subtilis</em>&nbsp;strain capable of oligo-mediated genome engineering and used this strain to alter a NRPS. We also investigated methods of screening for novel products with desired activities.</p>
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      Introduction
 +
    </h1>
 +
      <p>Over the summer we worked with nonribosomal peptide synthetases (NRPSs). We developed a&nbsp;<em>B. subtilis</em>&nbsp;strain capable of oligo-mediated genome engineering and used this strain to alter a NRPS. We also investigated methods of screening for novel products with desired activities.</p>
  
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  Background
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    <h1>
<p style="text-align: justify;">Nonribosomal peptide synthases (NRPSs) are large multimodular enzymes that synthesize nonribosomal peptides, which are short bioactive peptides with a broad range of functions, including antibiotics, immunosuppressants and anticancer drugs.</p>
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      Background
 +
    </h1>
 +
      <p>Nonribosomal peptide synthases (NRPSs) are large multimodular enzymes that synthesize nonribosomal peptides, which are short bioactive peptides with a broad range of functions, including antibiotics, immunosuppressants and anticancer drugs.</p>
  
 
<div class="overview-readmore"><a href="/Team:DTU-Denmark/Project/Background">Read more</a></div>
 
<div class="overview-readmore"><a href="/Team:DTU-Denmark/Project/Background">Read more</a></div>
  
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  MAGE subtilis
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  <div class="col-md-12 well overview-section"  style="height: 350px">
</h1>
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    <h1>
<p style="text-align: justify;">Multiplex automated genome engineering (MAGE) utilises cyclical recombination with short oligonucleotides in order to achieve a high allelic replacement efficiency and can be used to quickly generate cell populations with varying phenotypes. We introduced oligo-mediated genome engineering into <i>Bacillus subtilis</i>.</p>
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      MAGE subtilis
 +
    </h1>
 +
      <p>Multiplex automated genome engineering (MAGE) utilises cyclical recombination with short oligonucleotides in order to achieve a high allelic replacement efficiency and can be used to quickly generate cell populations with varying phenotypes. We introduced oligo-mediated genome engineering into <i>Bacillus subtilis&nbsp;</i>and used it to alter a nonribosomal peptide synthetase.</p>
  
<div class="overview-readmore">
 
 
<p><a href="/Team:DTU-Denmark/Project/MAGE">Read more</a></p>
 
<p><a href="/Team:DTU-Denmark/Project/MAGE">Read more</a></p>
</div>
 
  
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   Surfactin
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</h1>
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<p style="text-align: justify;">In order to verify that we could alter specificities of nonribosomal peptide synthetases to produce novel compounds, we used oligo-mediated recombineering to alter the surfactin peptide of <i>B. subtilis</i>.</p>
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<div class="overview-readmore">
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<p><a href="/Team:DTU-Denmark/Project/Surfactin">Read more</a></p>
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</div>
 
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  <div class="col-md-12 well overview-section"  style="height: 350px">
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    <h1>
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      Tyrocidine
 +
    </h1>
 +
      <p>Tyrocidine is a mixture of non-ribosomal peptides. It can only be used topically due to its toxicity. We sought to express the tyrocidine synthase cluster in <i>B. subtilis</i>&nbsp;to make novel derivatives with oligo-mediated recombineering.</p>
  
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      <h1>
 
  Tyrocidine
 
</h1>
 
<p style="text-align: justify;">Tyrocidine is a mixture of non-ribosomal peptides. It can only be used topically due to its toxicity. We sought to express the tyrocidine synthase cluster in <i>B. subtilis</i>&nbsp;to make novel derivatives with oligo-mediated recombineering.</p>
 
 
<div class="overview-readmore">
 
 
<p><a href="/Team:DTU-Denmark/Project/Tyrocidine">Read more</a></p>
 
<p><a href="/Team:DTU-Denmark/Project/Tyrocidine">Read more</a></p>
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    <h1>
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      Lab-on-a-disc
 +
    </h1>
 +
      <p>Lab-on-a-disc is a potential&nbsp;screening method for our MAGE NRPS products. After screening for antimicrobial activity, prospective MAGE edited NRPS products could be tested for different beneficial properties. One example is a quick screening method for cytotoxicity.</p>
  
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      <h1>
 
  Lab-on-a-disc
 
</h1>
 
<p style="text-align: justify;">Lab-on-a-disc is a concept of a&nbsp;screening method for our MAGE method to distinguish bacterial colonies producing non-ribosomal peptides (NRPs) of interest. Simple technology and science behind this has a potential to screen a few&nbsp;bacterial cultures at the same time.&nbsp;</p>
 
 
<div class="overview-readmore">
 
 
<p><a href="/Team:DTU-Denmark/Project/Chip">Read more</a></p>
 
<p><a href="/Team:DTU-Denmark/Project/Chip">Read more</a></p>
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    <h1>
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      Intein
 +
    </h1>
 +
      <p>When one method fails the Synthesizer team has to innovate! We explored an alternative approach for generating short, cyclized peptides with similar length to tyrocidine by using self-splicing proteins. These&nbsp;short, self-splicing proteins that have no function&nbsp;in the proteins they are a part of, besides catalyzing&nbsp;their own&nbsp;excision after translation, are called inteins. The splicing creates a peptide bond between the two&nbsp;adjacent amino acids next to the inteins and we hypothesized that it could be used to make our cyclic peptides.</p>
  
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      <h1>
 
  Intein
 
</h1>
 
<p style="text-align: justify;">When one method fails the Synthesizer team&nbsp;come&nbsp;up with a new idea! Alternative approach&nbsp;of generating short cyclized peptides with similar length to tyrocidine&nbsp;by using self-splicing proteins.<em> </em>Inteins are such short self-splicing proteins that have no function&nbsp;in the proteins they are a part of, besides catalyzing&nbsp;their own&nbsp;excision after translation. The splicing makes a peptide bond between the two&nbsp;adjacent amino acids next to the inteins.</p>
 
 
<div class="overview-readmore">
 
 
<p><a href="/Team:DTU-Denmark/Project/Intein">Read more</a></p>
 
<p><a href="/Team:DTU-Denmark/Project/Intein">Read more</a></p>
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      NRP Detection
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    </h1>
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      <p>Separation and identification of our non-ribosomal peptide synthetase (NRPS) products was determined by ultra-high performance liquid chromatography with diode array detection coupled to quadrupole time-of-flight mass spectrometry (UHPLC-DAD-QTOFMS). NRPS variants were identified by changes in mass-to-charge ratio&nbsp;and column retention time.&nbsp;</p>
  
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<p style="text-align: justify;">Separation and identification of our non-ribosomal peptide synthetase (NRPS) products was determined by ultra-high performance liquid chromatography with diode array detection coupled to quadrupole time-of-flight mass spectrometry (UHPLC-DAD-QTOFMS). NRPS variants were identified by changes in mass/z and column retention time.&nbsp;</p>
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Revision as of 13:56, 9 November 2015


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Project


Introduction

Over the summer we worked with nonribosomal peptide synthetases (NRPSs). We developed a B. subtilis strain capable of oligo-mediated genome engineering and used this strain to alter a NRPS. We also investigated methods of screening for novel products with desired activities.


Background

Nonribosomal peptide synthases (NRPSs) are large multimodular enzymes that synthesize nonribosomal peptides, which are short bioactive peptides with a broad range of functions, including antibiotics, immunosuppressants and anticancer drugs.

<a href="/Team:DTU-Denmark/Project/Background">Read more</a>


MAGE subtilis

Multiplex automated genome engineering (MAGE) utilises cyclical recombination with short oligonucleotides in order to achieve a high allelic replacement efficiency and can be used to quickly generate cell populations with varying phenotypes. We introduced oligo-mediated genome engineering into Bacillus subtilis and used it to alter a nonribosomal peptide synthetase.

<a href="/Team:DTU-Denmark/Project/MAGE">Read more</a>


Tyrocidine

Tyrocidine is a mixture of non-ribosomal peptides. It can only be used topically due to its toxicity. We sought to express the tyrocidine synthase cluster in B. subtilis to make novel derivatives with oligo-mediated recombineering.

<a href="/Team:DTU-Denmark/Project/Tyrocidine">Read more</a>


     <img src="https://2015.igem.org<app.models.UploadedFile object at 0x7ff5141f0050>">


Lab-on-a-disc

Lab-on-a-disc is a potential screening method for our MAGE NRPS products. After screening for antimicrobial activity, prospective MAGE edited NRPS products could be tested for different beneficial properties. One example is a quick screening method for cytotoxicity.

<a href="/Team:DTU-Denmark/Project/Chip">Read more</a>


Intein

When one method fails the Synthesizer team has to innovate! We explored an alternative approach for generating short, cyclized peptides with similar length to tyrocidine by using self-splicing proteins. These short, self-splicing proteins that have no function in the proteins they are a part of, besides catalyzing their own excision after translation, are called inteins. The splicing creates a peptide bond between the two adjacent amino acids next to the inteins and we hypothesized that it could be used to make our cyclic peptides.

<a href="/Team:DTU-Denmark/Project/Intein">Read more</a>


NRP Detection

Separation and identification of our non-ribosomal peptide synthetase (NRPS) products was determined by ultra-high performance liquid chromatography with diode array detection coupled to quadrupole time-of-flight mass spectrometry (UHPLC-DAD-QTOFMS). NRPS variants were identified by changes in mass-to-charge ratio and column retention time. 

<a href="/Team:DTU-Denmark/Project/Detection">Read more</a>



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