High Quality Microquantity cDNA Libraries

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High Quality Microquantity cDNA Libraries are constructed using our state-of-the-art methods for cDNA synthesis and cloning to produce libraries from small amounts of starting material. Like our standard libraries, these libraries are directionally cloned into Express I and then transformed into T1 phage resistant E. coli. We guarantee at least 1x106 primary clones with 87% recombinant clones containing an average insert size of at least 1kb, however, we generally produce libraries of 3x106 primary clones with >95% recombinant clones containing 1.5kb average insert size.

We will make microquantity libraries from customer supplied tissue (<1g), cells (at least 1x107), total RNA (50 µg) or mRNA (500 ng). We provide quality controlled primary or amplified libraries.

Features list:

- High quality cDNA clones.
- Directionally cloned cDNA for expression, antibody screening, subtraction and normalization.
- Large numbers of primary clones.
- Low vector background.

Quality testing: Percentage of recombinant clones and average insert size determined by gel analysis of 24 clones picked at random.

Shipment and storage conditions: Libraries will be shipped in dry ice. Storage of libraries at -80°C is recommended.

Characteristics of a cDNA Library Constructed From a Microquantity
Amount of HeLa mRNA
mRNA (ng)
Total # of primary clones
Average insert size (kb)*
Percent recombinants
Insert size range (kb)*
2,000
7.3x107
2.43
100
1.7 - 5.5
1,000
8.0x107
2.43
100
0.9 - 5.2
500
6.7x107
1.75
100
0.8 - 2.9

*Average insert size and insert size range determined by restriction enzyme digestion of 24 clones picked at random from each library.

Click here for Tissue and RNA Preparation suggestions

 

 

 

 

 

 

 

 

     
 
Contact Us
Office: 301 695 3445
Email:
expressgenomics@msn.com
Hours: 8:30-5:00 EST M-F
 
 

 

 
   
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