Team:Heidelberg/Delftibactin/DelRest

From 2013.igem.org

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                                   <h1>Week 18</h1>
                                   <h1>Week 18</h1>
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We send one of our most promising clones for sequencing. As it would be quite costly to sequence the whole 32 kb plasmid, we focused on the ligation sites between the different assembly fragments, which are most prone to insertion of errors. Although all insert fragments sequenced, including the ligation sites between DelA and DelF, DelO-P and DelL, were 100 % correct, wee detected a mutation within the mRFP cds (note: we wanted to use mRFP in order to confirm expression from our plasmid). FACS analysis of <i> E. coli </i>  bearing the DelRest construnct showed that mRFP was not expressed, likely due to the corresponding mutation. However, as mRFP was only meant to be an expression control for the DelRest genes we did not start a mutagenesis in order to regain the correct mRFP cds. Instead, we started preparing samples for an SDS page in order to directly proof the expression of the Del genes by Coomassie staining.
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We send one of our DelRest constructs that showed the right restriction pattern in the test digest for sequencing. As it would be quite costly to sequence the whole 32 kb plasmid, we focused on the ligation sites between the different assembly fragments, which are most prone to insertion of errors. Although all insert fragments sequenced, including the ligation sites between DelA and DelF, DelO-P and DelL, were 100 % correct, wee detected a mutation within the mRFP cds (note: we wanted to use mRFP in order to confirm expression from our DelRest plasmid). FACS analysis of <i> E. coli </i>  bearing the DelRest construnct confirmed that mRFP expression was impaired, likely due to the corresponding mutation. However, as mRFP was only meant to be a general expression control on our construct, we did not start correcting out construct by mutagenesis. Instead, we started preparing samples for an SDS page in order to directly proof the expression of the Del genes by Coomassie staining.
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???? Was the SDS Gel repeated  ????
???? Was the SDS Gel repeated  ????
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As we could confirm the sccessful cloning and functioning of the DelRest expressin plasmid pFSN the DelRest subproject was finished here and resources of the DelRest group were shifted to the DelH group.
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As we could confirm the sccessful cloning and functioning of the DelRest expression plasmid named pFSN (for Florian-Sophie-Nils :)) the DelRest subproject was succssfully completed and the personal resources of the DelRest group were shifted to the DelH group.
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Revision as of 21:49, 2 October 2013

Del Rest. Creating a 32 kbp plasmid.

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