Protein Quantification Kit (Bradford Assay)

Product Information

  • Product name

    Protein Quantification Kit (Bradford Assay)

  • Application notes

    Abbkine Protein Quantification Kit (Bradford Assay) provides a simple and rapid procedure for determining the concentration of protein in samples. The method utilizes an improved Coomassie blue G reagent which forms a blue complex in the presence of protein. When coomassie dye binds protein in an acidic medium, an immediate shift in absorption maximum occurs from 465nm to 595nm with a concomitant color change from brown to blue.The intensity of the blue complex is proportional to the amount of proteinin the sample.

  • Detection method

    Colorimetric

Fig. Protein Quantification Kit (Bradford Assay) standard curve

Product Properties

  • Kit components

    • Coomassie Assay Reagent • Albumin Standard (BSA)

  • Features & Benefits

    • Time saving—almost immediate color development. • Compatible—unaffected by most chemical substances. The concentration of mercaptoethanol and dithiothreitol in the samples can reach 1mM and 5 mM respectively. • Broad range—working range from 50 to 1000 µg/ml.

  • Calibration range

    50-1000 µg/ml

  • Limit of detection

    25 µg/ml

  • Usage notes

    Due to the influence of high concentration detergent, it is necessary to ensure that the concentration of SDS is lower than 0.1 %, Triton X-100 is lower than 0.1 % and Tween 20, 60, 80 is lower than 0.06 % in the sample.

  • Storage instructions

    The unopened kit should be stored at 2 - 8°C. After opening, please store refer to protocols.

  • Shipping

    Gel pack with blue ice.

  • Precautions

    The product listed herein is for research use only and is not intended for use in human or clinical diagnosis. Suggested applications of our products are not recommendations to use our products in violation of any patent or as a license. We cannot be responsible for patent infringements or other violations that may occur with the use of this product.

Additional Information

  • Background

    The Bradford assay, a colorimetric protein assay, is based on an absorbance shift of the dye Coomassie Brilliant Blue G-250. The Coomassie Brilliant Blue G-250 dye exists in three forms: anionic (blue), neutral (green), and cationic (red). Under acidic conditions, the red form of the dye is converted into its blue form, binding to the protein being assayed. If there's no protein to bind, then the solution will remain brown. The cationic (unbound) form is green / red and has an absorption spectrum maximum historically held to be at 465 nm. The anionic bound form of the dye which is held together by hydrophobic and ionic interactions, has an absorption spectrum maximum historically held to be at 595 nm. The increase of absorbance at 595 nm is proportional to the amount of bound dye, and thus to the amount (concentration) of protein present in the sample.

  • Alternative names

    Coomassie

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Protein Quantification Kit (Bradford Assay)
Click to download booklet for more details

Notice:Protocol may vary from different lot which is subject to the manual along with the shipment. Please contact service@abbkine.com for your enquiry.

Here we provide some standard research protocols for bioscience including molecular biology, cell biology, immunology, plant biology, genetics, etc. To our knowledge, customized protocols are not required for most products. So please try the standard protocols listed below and let us know how you get on.

Preparation methods for Biochemical

Biochemical reagents have been widely used in life science fundamental research as buffer, probes, substrates, intermediates and standards, etc. You may optimize or choose proper protocols for your specific assay. However, some of tips and suggestions listed below may be for your reference.

  1. ♦ What and how to make a "good" buffer?

Antibody application protocols

Antibodies are useful not only to detect specific biomolecules but also to measure changes in their level and specificity of modification by processes such as phosphorylation, methylation, or glycosylation. Here show some protocols and troubleshooting tips on how to get the best from our antibodies.

  1. ♦ Antibody Western Blotting (WB) protocol
  2. ♦ Antibody Immunohistochemistry (IHC) protocol
  3. ♦ Antibody Immunofluorescence (IF) protocol
  4. ♦ Antibody Immunoprecipitation (IP) protocol
  5. ♦ Antibody Enzyme-Linked ImmunoSorbent Assay (ELISA) protocol

Protein&peptide usage suggestions

Synthetic peptides, native or recombinant proteins can be used for medical, academic and research purposes, such as gene therapy, drug screening, antibody production, cell function analysis. Here, we provide some of tips and suggestions for your reference.

  1. ♦ Handling and storage suggestion for peptides and protein
  2. ♦ Cytokines and growth factors for cell culture application

Commonly used assay kits guidelines

Assay kits that are simple and convenient to use, which are superior in performance and require little to no time for assay optimization. Further details of specific products which are needed for individual protocols are given in the protocols themselves in booklet.

We hope this will be helpful for your research work. Please let us know through support@abbkine.com if you need more information or support.

Cat #: KTD3002

  • Size
  • Price
  • 500T $30
  • 2000T $70
  • 5000T $120

Contact information

Do not hesitate to contact us if you have any questions.

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