Team:Tec-Monterrey/projectresults

From 2011.igem.org

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<p class="textojustif"> Quantification of fructose was carried out with EnzyChrom Fructose Assay Kit from Medibena BioAssay Systems, which was donated by PhD Fernández. Transformed cell cultures (BL21SI, XL1Blue, C41, C43, Rosetta Gami, and BW27783) are induced with arabinose solution when their OD600 arrive at 0.600. After 30 hours of incubation at 15 °C, the cultures are centrifugated 5 min at 14,000 rpm. Supernatants are diluted with water and 20 uL of each sample is transfered into separate wells of 96-well plate. 56 uL Assay Buffer, 1 uL Enzyme, 14 uL PMS solution and 14 uL MTT solution are mixed and added to each well. After 1 hour of incubation at room temperature the plate is readed at 565 nm. The reaction is specific with fructose, so glucose and other sugar do not interfere. The color intensity is directly proportional to the fructose concentration.
<p class="textojustif"> Quantification of fructose was carried out with EnzyChrom Fructose Assay Kit from Medibena BioAssay Systems, which was donated by PhD Fernández. Transformed cell cultures (BL21SI, XL1Blue, C41, C43, Rosetta Gami, and BW27783) are induced with arabinose solution when their OD600 arrive at 0.600. After 30 hours of incubation at 15 °C, the cultures are centrifugated 5 min at 14,000 rpm. Supernatants are diluted with water and 20 uL of each sample is transfered into separate wells of 96-well plate. 56 uL Assay Buffer, 1 uL Enzyme, 14 uL PMS solution and 14 uL MTT solution are mixed and added to each well. After 1 hour of incubation at room temperature the plate is readed at 565 nm. The reaction is specific with fructose, so glucose and other sugar do not interfere. The color intensity is directly proportional to the fructose concentration.

Revision as of 16:40, 28 September 2011

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There are several tecniques to prove the successful transportation of CelD and SacC on the outer membrane of E. coli. In this project, SDS-PAGE of entire cell culture samples, SDS-PAGE of membrane fraction samples, and measurement of enzyme activity of whole-cell-system without any chemical purification operation have been considered in order to confirm the presence of active enzymes on the external membrane of E. coli.


resultado de construct & expresion celd


resultado ensayo celd



Quantification of fructose was carried out with EnzyChrom Fructose Assay Kit from Medibena BioAssay Systems, which was donated by PhD Fernández. Transformed cell cultures (BL21SI, XL1Blue, C41, C43, Rosetta Gami, and BW27783) are induced with arabinose solution when their OD600 arrive at 0.600. After 30 hours of incubation at 15 °C, the cultures are centrifugated 5 min at 14,000 rpm. Supernatants are diluted with water and 20 uL of each sample is transfered into separate wells of 96-well plate. 56 uL Assay Buffer, 1 uL Enzyme, 14 uL PMS solution and 14 uL MTT solution are mixed and added to each well. After 1 hour of incubation at room temperature the plate is readed at 565 nm. The reaction is specific with fructose, so glucose and other sugar do not interfere. The color intensity is directly proportional to the fructose concentration.