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MurA (UDP-N-acetylglucosamine enolpyruvyl transferase) carries out the first committed step of peptidoglycan biosynthesis in bacteria. It moves enolpyruvate from phosphoenolpyruvate (PEP) to UDP-N-acetylglucosamine, forming enolpyruvyl-UDP-N-acetylglucosamine and inorganic phosphate. It is essential and an attractive antibacterial drug target.
Pack Sizes
Both sizes include the E. coli MurA enzyme. The only difference is the number of assays: MURA100KE is for 100 assays and MURA500KE for 500 assays (384-well format), with component volumes scaled.
| 100 assays (MURA100KE) | 100 assays; enzyme included |
|---|---|
| 500 assays (MURA500KE) | 500 assays; enzyme included |
Kit Components
| Component | 100 assays (MURA100KE) | 500 assays (MURA500KE) |
|---|---|---|
| 10 x Assay buffer | 400 µl | 2 ml |
| 100 x PEP | 35 µl | 170 µl |
| 100 x UDP-N-acetylglucosamine (UGN) | 35 µl | 170 µl |
| 100 x E. coli MurA (5000 nM) | 35 µl | 170 µl |
| Phosphate detection dye (also sold separately as MicroMolar Phosphate Assay Reagent, BHT16300173) | 5 ml | 25 ml |
Assay Principle
The kit measures the inorganic phosphate released when MurA transfers enolpyruvate from PEP to UDP-N-acetylglucosamine with a phosphate detection dye; absorbance at 650 nm is proportional to MurA activity, so inhibitors reduce the signal.
Specifications
| Assay Target | E. coli MurA activity |
|---|---|
| Target Type | Transferase |
| Organism | E. coli |
| Assay Type | Enzyme Activity Assay; Inhibitor Screening Assay |
| Detection Method | Colorimetric |
| Detection Wavelength | Absorbance 650 nm |
| Plate Format | 384/96-well plate or cuvette |
| Instrument Required | Plate reader or spectrophotometer |
| Assay Time | About 65 min (60 min reaction + 5 min detection) |
| Sizes | 100 assays, 500 assays |
| Storage | Please contact us to confirm storage conditions. |
| Shipping | Shipped frozen. |
Protocol
The manufacturer's protocol describes the procedure and reaction volumes.
- E. coli MurA Assay (PDF, see Documents): Covers catalog # MURA100KE, MURA500KE.
Safety & Handling
Can’t find the exact format you need? We can help you source or customize this E. coli MurA activity assay — including larger pack sizes, bulk reagents, bulk enzyme, or a protocol adapted to your samples. Click Talk to a Scientist, email support@biohippo.com, or explore our Research Services. Our team will be in touch shortly.