Lidstrom: SDS-PAGE: Difference between revisions
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* Replace gel in gel holder | * Replace gel in gel holder | ||
* Dry surface of gel carefully with Kimwipe | * Dry surface of gel carefully with Kimwipe or paper towel | ||
** It can be a little gooey | |||
* Mix components of the amounts in the Gel Mix link. Mix in the order listed. | * Mix components of the amounts in the Gel Mix link. Mix in the order listed. | ||
*[http://mach7.bluehill.com/proteinc/tutorial/sdspage.html Gel Mix Recipe] | *[http://mach7.bluehill.com/proteinc/tutorial/sdspage.html Gel Mix Recipe] | ||
** Don't add APS/TEMED until ready to pour | ** Don't add APS/TEMED until ready to pour | ||
* Use pipette to put gel mix into the gap between the plates | * Use pipette to put gel mix into the gap between the plates | ||
* Insert the comb being careful not to trap any bubbles | * Insert the comb being 'careful not to trap any bubbles' | ||
* Attach binder clips to help hold the comb in while drying. One in either side of the casting stand clamp. | * Attach binder clips to help hold the comb in while drying. One in either side of the casting stand clamp. | ||
[[image:binder_clips_protein_gel.jpg|thumb|center|binder clips squeeze the glass to the comb. Put them as far down as they go.]] | |||
* Let dry for an hour | * Let dry for an hour | ||
Revision as of 11:44, 23 August 2012
Return: Protocols
Gel Prep
- Clean cover plate and thicker spacer plate 75 mM
- Soap and Water
- Ethanol
- DI water
- Dry plates
- Setup one spacer plate and one cover plate in each gel holder
- The cover plate goes on the side of the spacer plate with the spacers in order to create a small gap between the plates
- Put the gel holder into the casting stand
Pour the Resolving Gel
- Mix components of the amounts in the Gel Mix link for the resolving gel (Recipes is for 4 gels). Mix in the order listed.
- Gel Mix Recipe
- Don't add APS/TEMED until ready to pour
- Use pipette to put gel mix into the gap between the plates
- Carefully layer 50%EtOH 50% ddH2O on top of the gel to prevent the top of the gel from drying out
- Let dry for an hour
- Store at 4 deg C wrapped in a wet paper towel and saran wrap if you're not going to use it right away.
Pour the Stacking Gel
- Replace gel in gel holder
- Dry surface of gel carefully with Kimwipe or paper towel
- It can be a little gooey
- Mix components of the amounts in the Gel Mix link. Mix in the order listed.
- Gel Mix Recipe
- Don't add APS/TEMED until ready to pour
- Use pipette to put gel mix into the gap between the plates
- Insert the comb being 'careful not to trap any bubbles'
- Attach binder clips to help hold the comb in while drying. One in either side of the casting stand clamp.
- Let dry for an hour
Sample Prep
- 10-20 ug protein
- Load 12-15 uL, absolute max 20 uL for big comb
- Denature protein
- Mix with sample buffer & BME
- Boil for 5-10 min (can do longer times at lower temp, too.)
Running the Gel
- Bio-Rad Mini-Cell Setup
- If only 1 gel, use buffer dam to replace second gel
- Slot gels with cover plates facing each other...
- Apply pressure on gel holder and gels as you close the tabs to seal the center compartment.
- Fill central compartment with running buffer
- Pour rest into outer compartment
- Load gel
- Make sure to color/charge-match the cords to the power unit as the electrodes in the gel holder to the contacts in the lid.
- Run 30-45 min @250V