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Media characteristics Ligand and density pH stability* Mean particle size HiTrap IgM Purification HP 2-mercaptopyridine Long term 3–11 34 µm 2 mg/ml Short term 2–13 *Long term refers to the pH interval over which the medium is stable over a long period of time without adverse effects on its subsequent chromatographic performance. Short term refers to the pH interval for regeneration, cleaning-in-place and sanitization procedures. Storage Wash the column with 5 column volumes 20% ethanol and store at +4 to +8 °C. Avian IgY from egg yolk HiTrap IgY Purification HP Purification option Binding capacity Maximum Comments operating flow HiTrap IgY Purification HP 100 mg pure IgY/column 20 ml/min Purification of IgY from egg yolk. (1/4 egg yolk) Prepacked 5 ml column. HiTrap IgY Purification HP columns are packed with a thiophilic adsorption medium (2-mercaptopyridine coupled to Sepharose High Performance). The interaction between the protein and the ligand has been suggested to result from the combined electron donatingand accepting-action of the ligand in a mixed mode hydrophobic-hydrophilic interaction. Purification example Figure 20 shows the purification of a-Hb IgY from 45 ml of egg yolk extract (corresponding to one quarter of a yolk) and Figure 21 shows the SDS-PAGE analysis indicating a purity level of over 70%. A 280 nm IgY mS/cm Sample: 45 ml of egg yolk extract (corresponding to 1/4 of an egg yolk) containing a-Hb IgY, filtered through a 0.45 µm filter Column: HiTrap IgY Purification HP, 5 ml Binding buffer: 20 mM sodium phosphate buffer, 0.5 M potassium sulphate, pH 7.5 Elution buffer: 20 mM sodium phosphate buffer, pH 7.5 Cleaning buffer: 20 mM sodium phosphate buffer, pH 7.5, 30% isopropanol Flow: 5 ml/min 2.0 1.0 Elution buffer Cleaning buffer 80 60 40 20 0 0 0 50 100 150 ml Fig. 20. Purification of avian IgY on HiTrap IgY Purification HP. 40
M r 97 000 66 000 45 000 30 000 20 100 14 000 Lane 1. Lane 2. Lane 3. Lane 4. Lane 5. Lane 6. Lane 7. Low Molecular Weight Calibration Kit Egg yolk extract Flow-through pool Eluted IgY Egg yolk extract, diluted 4-fold Flow-through pool, diluted 4-fold Eluted IgY, diluted 4-fold 1 2 3 4 5 6 7 Fig. 21. SDS-PAGE of non-reduced samples on PhastSystem, using PhastGel 4–15%, Coomassie staining. Performing a separation Column: Recommended flow rate: HiTrap IgY Purification HP 5 ml/min Binding buffer: 20 mM sodium phosphate, 0.5 M K 2 SO 4 , pH 7.5 Elution buffer: 20 mM sodium phosphate, pH 7.5 Wash buffer: 20 mM sodium phosphate, pH 7.5 with 30% isopropanol As much as possible of the egg yolk lipid must be removed before purification. Water or polyethylene glycol can be used to precipitate the lipids. Precipitation with water is described below. Precipitation of the egg yolk lipid using water 1. Separate the egg yolk from the egg white. 2. Add nine parts of distilled water to one part egg yolk. 3. Mix and stir slowly for 6 hours at +4 °C. 4. Centrifuge at 10 000 g, at +4 °C for 25 minutes to precipitate the lipids. 5. Collect the supernatant containing the IgY. 6. Slowly add K 2 SO 4 to the sample, stirring constantly, to reach a concentration of 0.5 M. 7. Adjust pH to 7.5. 8. Pass the sample through a 0.45 µm filter immediately before applying it to the column. Purification 1. Wash the column with at least 5 column volumes of binding, elution and wash buffer. 2. Equilibrate with 5 column volumes of binding buffer. 3. Apply the sample. 4. Wash with at least 10 column volumes of binding buffer or until no material appears in the eluent, as monitored at A 280 . 5. Elute the IgY with 10 column volumes of elution buffer. 6. Wash the column with 8 column volumes of wash buffer. 7. Immediately re-equilibrate the column with 5 column volumes of binding buffer. 41
Page 1 and 2: Affinity Chromatography Principles
Page 3 and 4: Affinity Chromatography Principles
Page 5 and 6: Serine proteases and zymogens with
Page 7: Appendix 4 ........................
Page 10 and 11: This handbook describes the role of
Page 12 and 13: Affinity chromatography is also use
Page 14 and 15: BioProcess Media for large-scale pr
Page 17 and 18: Chapter 2 Affinity chromatography i
Page 19 and 20: Avoid using magnetic stirrers as th
Page 21 and 22: pH elution A change in pH alters th
Page 23 and 24: 0.6 0.4 0.2 0 A280 pH selected for
Page 25 and 26: Situation Cause Remedy Protein does
Page 27 and 28: Chapter 3 Purification of specific
Page 29 and 30: Table 2. Relative binding strengths
Page 31 and 32: Purification examples Figure 11 sho
Page 33 and 34: MAbTrap Kit Fig. 13. MAbTrap Kit, r
Page 35 and 36: Media characteristics Ligand Compos
Page 37 and 38: A 280 nm 2.0 1.5 1.0 0.5 Column: rP
Page 39 and 40: Desalt and/or transfer purified IgG
Page 41: Performing a separation Column: Rec
Page 45 and 46: in The Recombinant Protein Handbook
Page 47 and 48: Cleaning These procedures are appli
Page 49 and 50: Purification examples Figures 24 an
Page 51 and 52: Nickel solution: 0.1 M NiSO 4 Bindi
Page 53 and 54: Protein A fusion proteins IgG Sepha
Page 55 and 56: Purification or removal of serine p
Page 57 and 58: Sample: 2 ml clarified E. coli homo
Page 59 and 60: Serine proteases and zymogens with
Page 61 and 62: DNA binding proteins HiTrap Heparin
Page 63 and 64: Sample: Column: Binding buffer: Elu
Page 65 and 66: Media characteristics Ligand densit
Page 67 and 68: Sample: Pooled and frozen human pla
Page 69 and 70: The harsh conditions required to br
Page 71 and 72: Purification or removal of albumin
Page 73 and 74: IFN-act. A units 280 nm 250 0.12 20
Page 75 and 76: Purification options Binding capaci
Page 77 and 78: Sepharose NH (CH 2) n NH N N O N N
Page 79 and 80: If detergent or denaturing agents h
Page 81 and 82: Glycoproteins or polysaccharides Co
Page 83 and 84: For complex samples containing glyc
Page 85 and 86: For complex samples containing glyc
Page 87 and 88: Chemical stability Avoid exposure t
Page 89 and 90: Proteins and peptides with exposed
Page 91 and 92: Several methods can be used to dete
Page 93 and 94:
Media characteristics Composition M
Page 95 and 96:
Performing a separation Binding buf
Page 97 and 98:
Do not store the suspension for lon
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Sepharose has been modified and dev
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Ligand coupling Several methods are
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Couple a ligand through the least c
Page 105 and 106:
Table 9 summarizes recommended liga
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Coupling through the primary amine
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Ligand and column preparation 1. Di
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Options Product Spacer Coupling con
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100 80 Coupled substance, % 60 40 2
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Coupling small ligands through amin
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Ligand coupling 1. Add the ligand s
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Alternative coupling solutions: Dis
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Media characteristics Product Compo
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Ligands containing amino groups can
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Chapter 6 Affinity chromatography a
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Resolution is achieved by the selec
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For any capture step, select the te
Page 131 and 132:
Appendix 1 Sample preparation Sampl
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Remove salts from proteins with mol
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1. Filter (0.45 µm) or centrifuge
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For laboratory scale operations, Ta
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Removal of lipoproteins Lipoprotein
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Appendix 2 Selection of purificatio
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4. Estimate the amount of slurry (r
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Appendix 5 Conversion data: protein
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Middle unit residue (-H 2 0) Charge
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Expected results when changing cond
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Expected results with competitive e
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Appendix 8 Analytical assays during
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Appendix 9 Storage of biological sa
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Ordering information Product Quanti
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STREAMLINE, Sepharose, HiTrap, ÄKT
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