Difference between revisions of "Part:BBa K1398003"

Revision as of 22:22, 17 October 2014

NemA (Inducible Construct)

A construct created by the 2014 Exeter iGEM team to degrade TNT and nitroglycerin. The construct contains the coding sequence for NemA (BBa_K1398002), an enzyme involved in the degradation of toxic compounds for their reuse in nitrogen metabolism. The construct also contains a Lactose-inducible promoter (BBa_R0010 ), a strong RBS (BBa_B0034) and a double terminator made up of BBa_B0010 and BBa_B0012. The protein has been codon-optimised for expression in E. coli.

Exeter iGEM 2014

The Exeter 2014 team used Raman spectroscopy to show the breakdown of Nitroglycerin by NemA. The image below shows negative controls proving that NemA cannot perform this catalytic function without cofactors: FMN, NADH and NADPH.

The graph below shows how initial reaction velocity varies with initial concentration of the nitroglycerin in each reaction mixture. The concentrations of substrates and NemA are kept constant.

From these data a Hanes-Woolf plot was produced and allowed the Vmax and Km values to be determined: 6 mM and 21 umol per mg per min respectively.

Full article at: http://2014.igem.org/Team:Exeter/EnzymeValidation

Sequence and Features