Reagents in Protein Purification
The key to successful protein purification is choosing the correct process and the correct media and reagents. Although purification can sometimes be a simple one-step precipitation, multiple step processes are more frequently required to attain the desired purity. Your desired purity level will depend on the function to be served by the purified protein. Proteins for therapeutic use and in vivo studies generally require the highest purity level (> 99%), some characterization methods may require purity on the order of 95%-99%, while certain antibody production and sequencing methods may require just < 95% purity.

Additionally, your purification process will depend largely on the properties of your desired protein and targeted contaminants. Reagents and techniques should be chosen according to your objective in the corresponding step of your purification process, whether the aim is to isolate or purify the target protein.

Biodetergents such as Triton-X, n-Octyl-beta-D-Glucopyranoside (SEE BELOW), CHAPS are commonly used for solubilizing, extracting, and purifying membrane proteins.Octyl-Beta-D-GLUCOPYRANOSIDE


For all steps in extracting, isolating and purifying proteins, protease inhibitors such as pepstatin, bestatin (structure below), leupeptin, E-64, AEBSF for aspartic proteases or ETDA for metal-dependent proteases can be used in the buffer solution to inhibit protease bestatin, protease inhibitordevelopment and prevent damage to the target protein. The list of available reagents is extensive; a proper choice of high-quality reagents will save time and money in the purification and further downstream research processes. Learn about the A.G. Scientific protease inhibitors in this easy to download 8 page E-booklet.

[Get your Free Pepstatin Brochure here.]

[Get your Free Bestatin Brochure here.]

[Get your Free Leupeptin Hemisulfate Brochure here.]


A.G. Scientific is featuring the world's largest range of proteomic biomarker stabilization & preservation reagents to the marketplace. Immediate elimination of Proteolytic degradation via the ideal combination of protease inhibitors is absolutely essential for preserving & enhancing the long-term stability of these biomarkers. By downloading this E-booklet you will learn:

  • AG Scientific's most popular inhibitors.
  • Detailed description of fuctionality.
  • Detailed description of unique biomarker targets.
  • Comparision summary sheet for quick skim & review.
  • Complete listing of Custom Protease inhibitor cocktails.
  • Pricing comparisons of the 30+ Ready-to-Use formulations.
  • Custom formulations available

6 Items

per page
  1. CHAPS | Biodetergent | CAS 75621-03-3 | AG Scientific Inc.
    CHAPS Zwitterionic, High Purity

    Starting at $54.26

  2. Bestatin HCl | CAS 65391-42-6 | Inhibitors | AG Scientific, Inc.
    Bestatin HCl

    Starting at $45.91

  3. Leupeptin | CAS 103476-89-7 | Protease Inhibitor | AG Scientific, Inc.
    Leupeptin Hemisulfate

    Starting at $35.81

  4. Bestatin (Ubenimex)
    Bestatin (Ubenimex)

    Starting at $140.87

  5. Triton X-100, Reagent Grade
    Triton X-100, Reagent Grade

    Starting at $116.62

  6. CHAPS 10% Solution, Sterile Filtered | Chemical Structure | Biodetergent | AG Scientific, Inc.
    CHAPS 10% Solution, Sterile-Filtered

    Starting at $52.16


6 Items

per page