What is the principle of a phos-tag gel and what can be achieved with it?
Phos-tag SDS-PAGE is a phosphate-affinity electrophoresis technique that separates phosphorylated and non-phosphorylated proteins using conventional SDS-PAGE procedures. This technique uses a separation gel in which acrylamide is co-polymerized with Phos-tag Acrylamide that acts as a phosphate-trapping molecule.
How do you make a Phos-tag gel?
Soak gel in 50 ml methanol-free 1× transfer buffer containing 1 mM EDTA (100 μl of 0.5 M EDTA in 50 ml of 1× transfer buffer) 2 times for 10 min each to remove Zn2+ ions. Handle Phos-tag gels with care as these gels are easier to rip than normal ones.
What is a phos-tag gel?
Phos-tag gels are recent tools to dissect protein phosphorylation that operate by inducing a shift in the electrophoretic mobility of phosphorylated proteins compared to their nonphosphorylated counterparts.
Which is the example of phospho protein *?
Phosphoproteins are conjugate proteins, post-translationally modified by the attachment of phosphate group. Common examples of naturally occurring phosphoproteins are milk protein casein and ovo-vitellin of egg yolk.
How do you make SDS gel?
SDS-PAGE Gel
- Prepare the separation gel (10%).
- Pour gel, leaving ∼2 cm below the bottom of the comb for the stacking gel.
- Layer the top of the gel with isopropanol.
- Remove the isopropanol and wash out the remaining traces of isopropanol with distilled water.
- Prepare the stacking gel (4%).
What is the meaning of phosphoprotein?
Definition of phosphoprotein : any of various proteins (such as casein) that contain combined phosphoric acid.
Which phosphoprotein is present in egg yolk?
Ovovitellin
An example of phosphoprotein present in egg yolk is Ovovitellin.
How do you pour acrylamide gel?
With a marker, place a mark on the glass plate 1 cm below the teeth of the comb. This will be the level to which the separating gel is poured. Remove the comb. When pouring the resolving gel solution, pour the solution down the middle of the outside plate of the gel sandwich or down the side of one of the spacers.