Types | DnaRegion
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Roles | engineered_region
Device
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Sequences | BBa_K1627004_sequence (Version 1)
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Description
This part contains genes that allow for the demethylation of paraxanthine. The part contains a synthetic operon consisting of ndmA, ndmC, and ndmD from Pseudomonas putida CBB5 and gst9 from Janthinobacterium sp. Marseille under the control of a constitutive promoter, J23110.
This part can be used in a ∆guaB strain of E. coli to measure the amount of paraxanthine in a solution. By growing the ∆guaB strain with this device in a minimal media with different known concentrations of paraxanthine, a growth curve can be made that correlates culture growth with concentration of paraxanthine. Then if the strain is grown in a minimal media with an unknown concentration of paraxanthine, the growth can be compared to the growth curve to calculate the initial concentration of paraxanthine in the media.
Notes
These genes were amplified from the pDCAF3 plasmid (BBa_K734000). A PstI restriction site was removed from the ndmA gene during the cloning process. The genes were cloned into the pSB1C3 backbone using BioBrick Standard Assembly.
Source
The ndmA, ndmC, and ndmD genes were isolated from Pseudomonas putida CBB5. gst9 was isolated from Janthinobacterium sp. Marseille.