How sensitive is silver staining?

How sensitive is silver staining?

Silver staining Kits with optimized protocols are robust and easy to use, detecting less than 0.5 ng of protein in typical gels. Silver stains use either glutaraldehyde or formaldehyde as the enhancer.

Why is silver staining more sensitive?

Silver staining is the most sensitive colorimetric method for detecting total protein. The development process is essentially the same as for photographic film: silver ions are reduced to metallic silver, resulting in a brown-black color. Example gel stained with SilverXpress Silver Staining Kit.

Is Coomassie blue or silver stain more sensitive?

Coomassie Blue staining is approximately 50-fold less sensitive than silver staining, however due to its simplicity binding Coomassie Blue is preferred.

How do you make a Destain solution?

Destain: Add 500mL of HPLC- grade methanol to 300 mL of HPLC grade water. Add 100 mL of reagent grade acetic acid and, after mixing, adjust the total volume to 1000mL with water. The final concentrations are 50% (v/v) methanol in water with 10% (v/v) acetic acid.

How do you make a silver stain solution?

Silver staining

1. Fix the gel in fixation solution (40% ethanol, 10% acetic acid, 50% water) for 30 minutes.
2. Treat the gel with protein treatment solution (20% ethanol, 5% acetic acid, 75% water, 4 mg dithiothreitol) for 30 minutes.
3. Rinse the gel with 0.5% dichromate for 5 minutes.
4. Wash the gel with water for 5 minutes.

What does gomori methenamine silver stain?

Silver staining is a common special staining technique used in medical laboratories. Gomori’s Methenamine Silver (GMS) stain is used for fungi and bacteria. The fungi and bacteria are turned black, while everything else is stained green with Light green SF solution.

Why Formaldehyde is used in silver staining?

Fixation with aldehydes (formaldehyde, glutaraldehyde) dramatically improves fixation, sensitivity and uniformity of staining. It however precludes any further use of such stained spots.

Can you Restain Coomassie gel?

Yes, you can restain coommassie gels. Just wash the gel after the destain to remove any destain remaining and put the gel back into coommassie stain. You can stain and destain with coomassie as many times as you wish.

How do you make methenamine silver?

Microwave Method

1. Bring sections to distilled water.
2. Place slides in 40 ml 4% aq chromic acid in a loosely covered plastic coplin jar.
3. Dip slides up and down in coplin jar and leave to stand for a further 2 min.
4. Wash in running tap water 30 sec.
5. Treat sections with 1% sodium metabisulphite 30 sec.

What does gomori trichrome stain?

Gomori Trichrome Stain is a histological stain used on muscle tissue and can be used to test for certain forms of mitochondrial myopathy. Gomori Trichrome Stain will stain muscle fibers and cytoplasm in red, nuclei in black and collagen containing connective tissues in blue.

Can we do silver stain after Coomassie?

Silver staining over Coomassie-stain can work, but is usually quite ugly. If you can see your bands (even faintly) on Coomassie, I would run a separate gel with 10-30% sample and silver stain from fresh – it is about 10-100x more sensitive.