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Aggregate Detection
What is the recommended storage condition for ß-Lactoglobulin solution?
The solution of ß-Lactoglobulin can be stored at 4°C for up to a month. For long term storage, it is…
Tue, Jul 18, 2023
Would any protein work with ProteoStat® Thermal Shift Stability Assay kit, ENZ-51027?
When a protein aggregates in response to thermal stress, then the ProteoStat®dye would detect the aggregates. The exact efficiency of detection…
Tue, Jul 18, 2023
Is the ProteoStat® Thermal Shift Stability Assay Kit, ENZ-51027, compatible with the food proteins?
Beta-lactoglobulin is the control provided in the kit. In the food industry, protein aggregation is a desired attribute since aggregates impart…
Tue, Jul 18, 2023
Poor signal observed in the assay
Staining reagent has been exposed to strong light. Protect reagents from exposure to strong light.
Tue, Jul 18, 2023
High fluorescent signal at start of run
Protein formed aggregates before the run started. Use a different buffer or additive. Gain setting is too high. Many thermocyclers…
Tue, Jul 18, 2023
High fluorescence signal observed in negative control
Sample contains interfering substances. The assay is compatible with commonly used buffers (PBS, Tris, HEPES) and excipients (trehalose and sucrose),…
Tue, Jul 18, 2023
More than one aggregation peak is observed.
A protein might have multiple domains that start aggregation at different temperatures. For most samples, any aggregation is an indication…
Tue, Jul 18, 2023
Inconsistent results between PDI assay experiments.
This is caused by inappropriate Stop Reagent addition. Be sure to pre-incubate with Stop Reagent to terminate both the enzyme…
Tue, Jul 18, 2023
Insulin does not go into solution.
Insulin was not reconstituted in deionized water prior to dilution. Resuspend Insulin in deionized water before dilution into PBE Buffer.
Tue, Jul 18, 2023
Poor staining is observed in the positive control.
Stained reagents have been exposed to strong light. Protect samples from exposure to strong light and analyze them immediately after…
Tue, Jul 18, 2023