What causes protein electrophoresis to run crooked?
Distortions or slanted lines during protein electrophoresis are usually caused by multiple factors. Here are some common reasons and their potential solutions:
1. Uneven electric field:
If the electric field is uneven across the gel, it may cause proteins to migrate unevenly. Ensure good connections between electrodes and check for any damage.
2. Gel inconsistency:
If the gel preparation is uneven or contains bubbles, it may interfere with protein migration. Ensure thorough mixing and removal of bubbles when preparing the gel.
3. Temperature inconsistency:
Overheating of the gel during electrophoresis can cause distortion. Using a thermostatic circulation system or running the electrophoresis in a cold water bath can help prevent this issue.
4. Expired gel or chemical quality issues:
Ensure the use of fresh polymerization chemicals and peroxidase, along with other chemicals needed for gel preparation.
5. Sample overload:
Loading too much sample can cause distortion. Try reducing the sample amount or increasing the thickness of the gel.
6. Issues during sample loading:
Uneven sample loading or bubbles in the sample wells can cause uneven bands. Ensure proper handling when loading samples.
7. Buffer issues:
Improperly prepared or stale electrophoresis buffer solutions can affect the results. Ensure buffers are correctly prepared and replaced regularly.
8. Electrophoresis equipment issues:
Inspect the equipment to ensure there is no damage or contamination. Clean the electrophoresis tank and electrodes to ensure no residues or impurities affect the electrophoresis process.
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Protein separation based on SDS-PAGE
Two-dimensional gel electrophoresis services
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