What percentage gel should I use Western blot?
Loading and running the gel
Protein size | Gel percentage |
---|---|
12–45 kDa | 15% |
10–70 kDa | 12.5% |
15–100 kDa | 10% |
25–100 kDa | 8% |
What is the optimal protein size range for a 12.5 gel?
10–70 kDa
Load 20–40 µg total protein per mini-gel well. The gels should be submerged in migration buffer normally containing SDS, except in native gel electrophoresis….
Protein size | Gel acrylamide percentage |
---|---|
12–45 kDa | 15% |
10–70 kDa | 12.5% |
15–100 kDa | 10% |
25–200 kDa | 8% |
What percentage is Western gel?
SDS-PAGE Gel Electrophoresis Protocol
Protein Size | Gel Percentage |
---|---|
12-45 kDa | 15% |
10-70 kDa | 12.5% |
15-100 kDa | 10% |
50-200 kDa | 8% |
What do gel percentages mean?
%T indicates the relative pore size of the resulting polyacrylamide gel: higher %T refers to a larger polymer-to-water ratio and on average smaller pores. The practical ranges for monomer concentration are stock solutions of 30-40%, with different ratios of acrylamide monomer to crosslinker.
How do you choose gel concentration?
WHAT’S THE BEST PERCENTAGE GEL FOR YOUR APPLICATION?
- Size range between. proteins is narrow. 40–200 kD. (7.5%) 30–150 kD. (10%) 20–120 kD. (12%) Single Percentage Gels.
- Size range between. proteins is broad. 10–200 kD. (4–20%) 10–100 kD. (Any kD) 20–250 kD. (4–15%) Gradient Gels.
How much protein should I load on a gel?
Standard gel combs
Recommended loading volume* | Maximum protein load per band | |
---|---|---|
Well format | 1.0 mm thickness | |
10-well | 25 µL | 0.5 µg |
12-well | 20 µL | 0.5 µg |
15-well | 15 µL | 0.5 µg |
What percentage gel should I use?
Use a high percentage agarose gel. Between 2.00% and 3.00% should help. Higher concentration gels have a better resolving power.
What percent gel would you use to resolve a 400 kDa protein?
All Answers (1) Generally To resolve a protein of molecular weight 400KDa, 7% Resolving SDS-PAGE Gel is sufficient.
Why does SDS PAGE have two gels?
So the stacking gel ensures that all of the proteins arrive at the running gel at the same time so proteins of the same molecular weight will migrate as tight bands.
How do you know when to stop running the gel?
When the dye front is nearly at the bottom of the gel it is time to stop the run. For low percent gels with a tight dye front, the dye should be on the verge of running off the gel.