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Contents
1. Introduction 74
2. General Instructions for Reagent Preparation 75
3. Ultraviolet Absorption Spectroscopy 80
3.1. Ultraviolet absorbance at 280 nm (Range: 20¨C3000 mg) 80
3.2. Method 81
3.3. Comments 81
3.4. Ultraviolet absorbance at 205 nm (Range: 1¨C100 mg) 82
3.5. Calculation of the extinction coefficient 82
4. Dye-Based Protein Assays 83
4.1. Protein concentration standards 83
5. Coomassie Blue (Bradford) Protein Assay (Range: 1¨C50 mg) 85
5.1. Reagents 85
5.2. Procedure 85
5.3. Comments 86
6. Lowry (Alkaline Copper Reduction Assays) (Range: 5¨C100 mg) 86
6.1. Reagents 87
6.2. Procedure 87
6.3. Comments 88
7. Bicinchoninic Acid (BCA) (Range: 0.2¨C50 mg) 88
7.1. Reagents 88
7.2. Procedure 89
7.3. Comments 89
8. Amine Derivatization (Range: 0.05¨C25 mg) 89
8.1. Reagents 90
8.2. Procedure 90
8.3. Comments 90
9. Detergent-Based Fluorescent Detection (Range: 0.02¨C2 mg) 91
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