Difference between revisions of "Part:BBa K862000"
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<b>Fig. 2: X-gal assay of Bl21(DE3) transformed with precA/precB/psulA_LacZ parts and irradiated for different times. </b>All constructs show a strong positive correlation between UV induction time and coloring of the wells. PrecA-LacZ gives the lowest reporter background expression whereas psulA-LacZ gives the highest overall coloring of the samples.<br/>
 
<b>Fig. 2: X-gal assay of Bl21(DE3) transformed with precA/precB/psulA_LacZ parts and irradiated for different times. </b>All constructs show a strong positive correlation between UV induction time and coloring of the wells. PrecA-LacZ gives the lowest reporter background expression whereas psulA-LacZ gives the highest overall coloring of the samples.<br/>
 
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<b>Fig. 3: Test of precA-GFP reporter construct by fluorescence microscopy. </b><i>E.coli</i> transformed with our precA-GFP reporter were either UV-irradiated for 30 min or left uninduced. measurement of GFP expression show a 10-fold (!) increase in GFP expression due to UV-irradiation compared to the control. <br/>
 
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Revision as of 20:43, 24 June 2012

precA-LacZ-doubleTerminator

This is a part for the precise quantification of UV-radiation or radioactive radiation in E. coli (recA+) strains, i.e. BL21(DE3). It consits of a recA Promoter (part BBa_J22106) fused to a LacZ reporter cloned in front of a double terminator (part BBa_K173004).


Characterisation

This part was characterized during the 2012 HS competition by the Heidelberg LSL team

Fig. 1: ONPG assay of Bl21(DE3) irradiated for different times. Both constructs show a strong correlation between the UV-irradiation time and the LacZ activity (production of o-nitrophenol).



Fig. 2: X-gal assay of Bl21(DE3) transformed with precA/precB/psulA_LacZ parts and irradiated for different times. All constructs show a strong positive correlation between UV induction time and coloring of the wells. PrecA-LacZ gives the lowest reporter background expression whereas psulA-LacZ gives the highest overall coloring of the samples.

Sequence and Features BBa_K862000 SequenceAndFeatures