RNAi外源筛靶上市!

2011武汉国际生物技术展

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Two Dimension Gel Electrophoresis

双向电泳 (Two Dimension Gel Electrophoresis)

第一向溶液:

1. 聚丙稀酰胺储存液

Acrylamide/bis 28.38g

1.62 g

100 ml

2. 10% Triton X-100

100% Triton X-100 10ml

100 ml

3. 第一向上样缓冲液

9.5 M 尿素 5.7g

2.0%Triton X-100 2.0ml (10%)

5% MCE 0.5ml

2% 5/7 ampholyte 0.5ml

ddH2O定容至 10 ml

0.5ml分装后-70℃冻存

4. 第一向保护缓冲液

9 M 尿素 5.41 g

1% 5/7 ampholyte 250 ml

溴芬兰 500 ml (0.05%;W/V)

ddH2O定容至 10 ml

0.5ml分装后-70℃冻存

5. 上槽缓冲液 (100mM NaOH)

0.2g NaOH, ddH2O定容至250ml

6. 下槽缓冲液 10mM

1.36ml H3PO4, ddH2O定容至2L

7. SDS样品平衡缓冲液

0.0625M Tris/Cl, PH 6.8 12.5 ml (0.5M)

2.3%(w/v) SDS 23 ml (10%)

5% MCE 5 ml

10%(w/v)甘油 8 ml

溴芬兰 2.5ml (0.05%;W/V)

ddH2O 49 ml

100ml

第一向管胶的配置

9.2 M 尿素 5.5 g

4% acrylamide 1.33 ml

2%Triton X-100 2.0 ml (10%)

2% ampholyte 0.5 ml

ddH2O 1.97 ml

0.01% AP 10ml (10%)

0.1% TEMED 10ml

共为10ml, 在≤45℃溶解。

AP以及TEMED在溶解后加配置

步骤:

一. 预电泳

下槽液约800ml, 上槽液约60ml.

赶去气泡,置于4℃冰箱中,200V/10min, 300V/15min, 400V/15min

二. 电泳 

1. 倒去缓冲液,换上新的,重新去除气泡。 

2. 上样 

3. 500V/10min, 750V/3.5h

4. 取出管胶,置于Parafilm上,然后放入预先放有平衡液的第二向上样槽中。如果需要平衡的话,在其上加入约200ml平衡液,放置10min,然后开始电泳。 

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