B-PER™ II Bacterial Protein Extraction Reagent (2X)
B-PER™ II Bacterial Protein Extraction Reagent (2X)
B-PER™ II Bacterial Protein Extraction Reagent (2X)
B-PER™ II Bacterial Protein Extraction Reagent (2X)
Thermo Scientific™

B-PER™ II Bacterial Protein Extraction Reagent (2X)

Thermo Scientific B-PER II Bacterial Protein Extraction Reagent (2X) is an easy-to-use cell lysis reagent is a nonionic detergent-based solutionsRead more
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Catalog NumberQuantity
78260250 mL
Catalog number 78260
Price (EUR)
608,00
Each
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Quantity:
250 mL
Request bulk or custom format
Price (EUR)
608,00
Each
Add to cart
Thermo Scientific B-PER II Bacterial Protein Extraction Reagent (2X) is an easy-to-use cell lysis reagent is a nonionic detergent-based solutions that effectively disrupt cells and solubilize native or recombinant proteins without denaturation. All B-PER Reagents are compatible with downstream applications, such as affinity chromatography (e.g., immobilized metal affinity chromatography, glutathione chromatography), SDS-PAGE, and protein quantification (e.g., Pierce BCA Protein Assay, Pierce 660nm Protein Assay). Depending on the particular application, protease inhibitors, salts, reducing agents, denaturants, and chelating agents may be added to the reagent.

Features of the B-PER Bacterial Protein Extraction Reagent:

• 2X B-PER (detergent in Tris buffer; no enzyme components)
• Bacterial lysis
• Purification of proteins having low expression levels

All Thermo Scientific B-PER Protein Extraction Reagents are:
Ready to use—one-step cell lysis of gram-positive and gram-negative bacteria using a mild, nonionic detergent (proprietary) in Tris or phosphate buffer formulations
Fast and simple—just add B-PER Reagent to a bacterial pellet, incubate with mixing for 10 to 15 minutes and recover soluble proteins after pelleting the cell debris
Convenient B-PER Complete Reagent contains lysozyme and a universal nuclease in a single formulation with 4°C storage
Excellent yields—recover recombinant proteins from bacterial lysates or purify inclusion bodies to near-homogeneous levels
Flexible—B-PER Reagents are suitable for any scale of protein extraction and are available in phosphate and 1X and 2X Tris formulations, with and without enzymes
Compatible—completely compatible with addition of protease inhibitors, and the resulting protein extract can be used in protein assays, typical affinity purification methods (e.g., GST, 6xHis) and other applications

Convenient, Ready-to-use Formats
B-PER Bacterial Extraction Reagents are more effective than traditional sonication and typical homemade lysis buffers, many of which include detergents and components that interfere with downstream applications. B-PER Reagents are formulated in Tris or phosphate buffer at physiological pH. They extract native and soluble recombinant proteins and yield lysates that are directly compatible with most downstream workflows such as electrophoresis, affinity purification, immunoprecipitation, protein interaction analysis, crosslinking and protein labeling.

More Product Data
Improved, all-in-one B-PER Reagent for bacterial protein extraction

Related Products
B-PER™ Bacterial Protein Extraction Reagent
B-PER™ Complete Bacterial Protein Extraction Reagent
B-PER™ Reagent (in Phosphate Buffer)
For Research Use Only. Not for use in diagnostic procedures.
Specifications
DescriptionB-PER II Bacterial Protein Extraction Reagent (2X)
FormatLiquid
Quantity250 mL
Volume (Metric)250 mL
Product LineB-PER
Product TypeBacterial Protein Extraction Reagent
Unit SizeEach
Contents & Storage
Store at room temperature.

Frequently asked questions (FAQs)

What is the difference between B-PER and B-PER II Reagent?

B-PER II Reagent contains more detergent making it ideal for extracting proteins from small bacterial cultures with less than 20 mL in volume.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.

What is the composition of B-PER Reagent?

B-PER Reagent utilizes a proprietary, mild nonionic detergent in a 20 mM Tris HCl, pH 7.5 buffer. No enzymatic components are present in the B-PER solution itself (B-PER Complete Bacterial Protein Extraction Reagent, Cat. No. 89821, 89822 does contain enzymes). Depending on your particular protein, you may need to add components such as salt, lysozyme, protease inhibitors, reducing agents and chelating agents. Other ready-to-use formats include B-PER II Bacterial Protein Extraction Reagent (2X), B-PER Reagent (in Phosphate Buffer), and B-PER with Enzymes Bacterial Protein Extraction Kit.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.

What is the volume of B-PER Extraction Reagent to use per gram weight of wet cells?

For 1 gram of cells add 4 mL of B-PER Reagent.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.

Will my protein be in its native conformation after B-PER Reagent extraction?

While this is protein-dependent, many proteins have been successfully tested in downstream applications (reporter assays, immunoprecipitation and beta-Gal assays), including GST and 6xHis proteins. Otherwise, samples can be diluted or dialyzed to remove any interfering substances.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.

Why is my protein extract so viscous after B-PER Reagent extraction?

This is often an indication of the presence of large amounts of DNA in the extract. This viscosity will be greatly decreased upon addition of DNase I (Cat. No. 90083).

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.

Citations & References (2)

Citations & References
Abstract
Rapid isolation of high-affinity protein binding peptides using bacterial display.
Authors:Bessette PH, Rice JJ, Daugherty PS
Journal:Protein Eng Des Sel
PubMed ID:15531628
'A robust bacterial display methodology was developed that allows the rapid isolation of peptides that bind to arbitrarily selected targets with high affinity. To demonstrate the utility of this approach, a large library (5 x 10(10) clones) was constructed composed of random 15-mer peptide insertions constrained within a flexible, surface ... More
Improved monomeric red, orange and yellow fluorescent proteins derived from Discosoma sp. red fluorescent protein.
Authors:Shaner NC, Campbell RE, Steinbach PA, Giepmans BN, Palmer AE, Tsien RY
Journal:Nat Biotechnol
PubMed ID:15558047
Fluorescent proteins are genetically encoded, easily imaged reporters crucial in biology and biotechnology. When a protein is tagged by fusion to a fluorescent protein, interactions between fluorescent proteins can undesirably disturb targeting or function. Unfortunately, all wild-type yellow-to-red fluorescent proteins reported so far are obligately tetrameric and often toxic or ... More