How do I use TCEP?

7 demonstrated that TCEP can be used for this purpose: Add TCEP at a final concentration of 3.8-4.0mM to 10mg/mL IgG in 0.1M phosphate buffer (pH 4.6- 7.5); incubate for 20-30 minutes at room temperature, then use a desalting column to remove the TCEP products.

Does TCEP work at low pH?

TCEP-HCl is an odor- less (non-volatile) reducing agent that has been found to be more stable and effective than dithiothreitol (DTT) and able to work well at lower pH levels. TCEP-HCl is stable in aqueous solutions and have been found to be in effect unreactive toward other functional groups in proteins.

Is TCEP a reducing agent?

TCEP (tris(2-carboxyethyl)phosphine) is a reducing agent frequently used in biochemical and molecular biology applications. TCEP is often used as a reducing agent to break disulfide bonds within and between proteins as a preparatory step for gel electrophoresis.

Is TCEP reduction reversible?

TCEP reaction is irreversible, whereas DTT reaction is reversible.

Is TCEP soluble in methanol?

The hydrochloride salt (TCEP•HCl, MW 286.64) has a solubility in water of 310 g/L (1.08 M). Being hydrophilic, TCEP is generally very soluble in aqueous buffers at nearly any pH. TCEP has only minimal solubility in organic solvents, including methanol and ethanol. TCEP is stable in aqueous, acidic, and basic solutions.

Is TCEP better than DTT?

For long-term storage of proteins, TCEP is significantly more stable than DTT without metal chelates such as EGTA in the buffer, whereas DTT is more stable if metal chelates are present. Thus TCEP has advantages over DTT, although the choice of reductant is application specific.

Is TCEP solution stable?

TCEP is stable in aqueous, acidic, and basic solutions. When TCEP is dissolved directly in water, the resulting pH is approximately 2.5. TCEP is not particularly stable in phosphate buffers, especially at neutral or alkaline pH.

Does 280 absorb TCEP?

Moreover, TCEP does not absorb UV light in the range of 250 – 280 nm, making it useful for monitoring reactions with proteins that contain aromatic amino acid residues.

Does DTT change pH?

The reducing power of DTT is limited to pH values above 7, since only the negatively charged thiolate form -S− is reactive (the protonated thiol form -SH is not); the pKa of the thiol groups is 9.2 and 10.1.

Is TCEP a flame retardant?

What is TCEP? TCEP is a flame retardant. TCEP has been added to polyurethane foams and plastics in: Certain children’s products with foam padding, such as some crib bumpers, sleep mats, changing table pads, and portable mattresses.

How does TCEP reduce disulfides?

TCEP selectively and completely reduces even the most stable water-soluble alkyl disulfides over a wide pH range. TCEP effectively reduces disulfide bonds over a broad pH range. A pH range (1.5 <9.0) is recommended for the reduction reaction. Reductions frequently require less than 5 minutes at room temperature unlike most other reducing agents.

Is TCEP a better reducing agent than DTT for protein reduction?

This time i want to reduce the protein to see if the cysteines can become free or to see if the cysteine are buried within the protein. I know tcep is a better reducing agent than dtt because tcep can react without being in competition with the maleimide. the buffer that my protein is in is sodium phosphate p.H 7.4.

What is TCEP and how does it work?

Biosynthesis, a provider of reliable and innovative products and services to the life-Sciences, Diagnostic and Pharmaceutical Community. TCEP effectively reduces disulfide bonds over a broad pH range. A pH range (1.5<9.0) is recommended for the reduction reaction.

What is the difference between tctcep and DTT?

TCEP reduces disulfide bonds as effectively as dithiothreitol (DTT), but unlike DTT and other thiol-containing reducing agents, TCEP does not have to be removed before certain sulfhydryl-reactive cross-linking reactions. TCEP selectively and completely reduces even the most stable water-soluble alkyl disulfides over a wide pH range.