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Affinity Purification Resins

Download the Protein Purification Handbook for a full list of related productsDownload the Purification Resins Handbook for Complete Product List

 

For the separation & purification of affinity tagged proteins & antibodies
 
The separation and purification of proteins has been a major challenge for researchers in the early days of proteomic research. The advances in affinity chromatography have enabled researchers to purify large quantities of highly pure proteins for a multitude of analysis techniques, including crystallography, protein:protein studies and in-vitro assays.
Affinity chromatography works by binding a protein, via a reversible interaction, to a specific ligand that is prebound to a solid chromatographic support. The protein(s) are first bound to the column in a buffer that supplies conditions optimal for binding. Unbound, non-specific material is washed away and the protein(s) of interest are then eluted by changing the buffering conditions to induce desorption from the solid support.
We supply two main groups of affinity resins. The first group is for the separation and purification of affinity tagged proteins and the second group is for the binding of immunoglobulin molecules.
A common practice in today’s research is the use of molecular biology to clone our protein(s) of interest into a vector that adds a specific tag to the protein. The most versatile and common tags used are glutathione S-transferase (GST), a 6x histidine motif (His-tag), and the calmodulin binding peptide (CBP).
G-Biosciences Immobilized Pepstatin is for the purification of cathepsins, pepsin, bacterial aspartic proteases, HIV proteases and other molecules that bind pepstatin.    Pepstatin is isovaleryl-Val-Val-AHMHA-Ala-AHMHA where AHMHA= (3S, 4S)-4-amino-3-hydroxy-6-methyl-heptanoic acid and i..
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Immobilized Procainamide is designed for affinity purification of butyrylcholinesterase (BuChE), which is also known as non-specific cholinesterase. Butyrylcholinesterase can be purified by batch adsorption on immobilized Procainamide followed by ion-exchange chromatography on DEAE-Sepharose column..
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Biotin, a 244Da vitamin (Vitamin H) molecule, exhibits an extraordinary binding affinity for avidin (Ka=10¹âµM-¹) and streptavidin (Ka=10¹âµM-¹). Biotin and (strept)avidin interaction is rapid. Once the bond is established, it can survive up to 3M guanid..
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Immobilized Trypsin is TPCK Treated Trypsin immobilized on 4% agarose that eliminates the contamination of protein digests by the trypsin.  The immobilized trypsin is readily removed by separating the agarose from the digestion solution.   Trypsin is a serine endopeptidase that specific..
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Lectins are proteins or glycoproteins that have at least one noncatalytic domain that binds specifically and reversibly to monosaccharides or oligosaccharides. Lectins are important as they are found in applications in science, medicine, agriculture, pharmaceutical companies, biotechnology and other..
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Lectins are proteins or glycoproteins that have at least one noncatalytic domain that binds specifically and reversibly to monosaccharides or oligosaccharides. Lectins are important as they are found in applications in science, medicine, agriculture, pharmaceutical companies, biotechnology and other..
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NHS-Activated Agarose consists of 4% cross-linked agarose that has been activated by the addition of a reactive NHS (N-hydroxysuccinimide) group. The NHS group forms covalent, chemically stable amide bonds with ligands that contain primary amines. The NHS-Activated Agarose also contains a spacer arm..
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G-Biosciences’ Ni-NTA Magnetic Beads are 3µm beads designed for the rapid purification of X His-tagged proteins. Ni-NTA Magnetic Beads have nitrilotriacetic acid (NTA) groups with charged nickel covalently bound to the surface dextran of the beads.  Due to the high affinity, Ni-NTA ..
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Immobilized metal affinity chromatography (IMAC) resin utilizing nickel (Ni2+) for the purification of 6x histidine tagged proteins.   This resin binds to six histidine residues (6x His), a common tag used in protein purification. The resin consists of iminodiacetate coupled to 6% cross-linke..
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ρ-Aminobenzamidine Agarose primary application is for the removal and/or purification of trypsin-like proteases.  ρ-aminobenzamidine (PAB) is a synthetic inhibitor of trypsin-like proteases and has been covalently coupled to 6% crosslinked agarose.   ρ-aminobenzamidine agaros..
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G-Biosciences' Protein A Magnetic Beads are Fe3O4 beads coated with dextran to produce highly uniform, 1µm beads. Recombinant Protein A is covalently coupled to the dextran coat to produce an enhanced alternative to agarose slurries for immunoprecipitation experiments.   The use of ..
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G-Biosciences' Protein G Magnetic Beads are Fe3O4 beads coated with dextran to produce highly uniform, 1µm beads. Recombinant Protein G is covalently coupled to the dextran coat to produce an enhanced alternative to agarose slurries for immunoprecipitation experiments. G-Biosciences m..
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