| Assay Method Information | |
| | Enzymatic Assay |
| Description: | All enzymatic assays are carried out in triplicate at 37° C. using a stopped assay procedure by measuring the amount of 4-nitrophenolate liberated as determined by absorption measurements at 400 nm. Reactions (50 μL) are initiated by the addition, via syringe, of enzyme (3 μL). Time-dependent assay of β-hexosaminidase has revealed that the enzyme is stable in the buffer over the period of the assay: 50 mM citrate, 100 mM NaCl, 0.1% BSA, pH 4.25. β-hexosaminidase is used at a concentration of 0.036 mg/mL with pNP-GlcNAc as a substrate at a concentration of 0.5 mM. |
| Affinity data for this assay | |
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