反应 #328653

反应方程式

triethanolamine

acetic acid

→

triethanolamine acetate

反应条件

后处理

1. 1
   浓缩a range of triethanolamine acetate concentrations at pH 7.4 in the absence of any salt such as NaCl
2. 2
   洗涤The bound CA was eluted
3. 3
   洗涤a final wash of the column
4. 4
   其他a micro membrane dialysis system

实验过程

Polydispersed CA was also fractionated by Sepharose Q FF (1 ml matrix, prepacked) using a range of triethanolamine acetate concentrations at pH 7.4 in the absence of any salt such as NaCl. The triethanolamine acetate buffer was prepared using triethanolamine and adjusting the pH to 7.4 using acetic acid. Polydispersed CA (40 mg; 1 ml) (22.7 kDa; pd 1.34) was loaded on to a Q FF column (1 ml matrix; prepacked). The bound CA was eluted by passing 1 ml of each triethanolamine acetate buffer (300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400 and 1500 mM triethanolamine acetate) through the column at a flow rate of 1 ml/min with a final wash of the column using 200 mM triethanolamine acetate. A small sample of each fraction (20 il) was then buffer exchanged with water using a micro membrane dialysis system, lyophilised and then analysed by native PAGE (20% TBE gel stained with alcian blue).

来源