| Assay Method Information | |
| | Inhibition Assay |
| Description: | To assay the activity of E. coli LpxC enzyme, LpxC was reacted with its substrate UDP-3-O-(R-3-hydroxytetradecanoyl)-N-acetylglucosamine and the amount of the reaction product was determined by quantifying the amino groups present in it.Specifically, 12.5 ng of E. coli LpxC enzyme (as acquired by preparing chromosomal DNA from E. coli, subjecting the DNA to PCR (polymerase chain reaction) using LpxC specific primers to acquire E. coli LpxC genes, incorporating the genes into a vector, and expressing the same with E. coli) was mixed with 20 .mu.mol/L of UDP-3-O-(R-3-hydroxytetradecanoyl)-N-acetylglucosamine (Wako Pure Chemical Industries, Ltd.) and the mixture was incubated at room temperature for 120 minutes. The reaction was performed in 40 mmol/L of 2-morpholinoethanesulfonic acid buffer solution (pH 6.5) supplemented with 0.02% Bridge 35 and 80 .mu.mol/L of dithiothreitol. To terminate the reaction, 0.2 mol/L of borax was added to the reaction mixture. |
| Affinity data for this assay | |
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