Difference between revisions of "Team:Vilnius-Lithuania/Design"

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         <h5>SynORI framework gives the opportunity to have low copy plasmid groups, yet in order for them not to be lost during cell division, there must be a mechanism that actively keeps plasmids in the cell.
 
         <h5>SynORI framework gives the opportunity to have low copy plasmid groups, yet in order for them not to be lost during cell division, there must be a mechanism that actively keeps plasmids in the cell.
 
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         <p>We have looked into different active partitioning systems and first chose to characterize and apply a Staphylococcus aureus type II plasmid segregation system to our framework. Yet, after a lot of consideration we have decided to search for alternatives. The main reason was that partitioning system of S. aureus is rather large, almost 49 kDa, as it codes two large proteins for segregation.</p>
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         <p>We have looked into different active partitioning systems and first chose to characterize and apply a <i>Staphylococcus aureus</i> type II plasmid segregation system to our framework. Yet, after a lot of consideration we have decided to search for alternatives. The main reason was that partitioning system of S. aureus is rather large, almost 49 kDa, as it codes two large proteins for segregation.</p>
 
   
 
   
 
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         <p>It has been showed that pSC101 plasmids with partial deletions of stability region have decreased supercoiling and are extremely unstable. This has led to the proposal that gyrase-generated negative supercoiling establishes a DNA conformation which enables plasmids to interact with E. coli structures and distribute them to daughter cells during cell division (Miller et al., 1990)</p>
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         <p>It has been showed that pSC101 plasmids with partial deletions of stability region have decreased supercoiling and are extremely unstable. This has led to the proposal that gyrase-generated negative supercoiling establishes a DNA conformation which enables plasmids to interact with <i>E. coli</i> structures and distribute them to daughter cells during cell division (Miller et al., 1990)</p>
 
        
 
        
 
        
 
        

Revision as of 13:25, 1 November 2017

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Plasmid copy number control

Design

Flexible copy number control is the core of our framework, which is based on re-engineered ColE1 origin of replicon.

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