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Characterization of TNT® T7 Quick for PCR DNA: Compatibility with Other Procedures

By Natalie Betz, Ph.D.
Promega Corporation

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Transcend™ Non-Radioactive Translation Detection System

To verify this translation system is compatible with non-radioactive detection, linearized Luciferase T7 Control DNA* was titrated into the TNT® T7 Quick for PCR DNA system in the presence of Transcend™ Biotinylated Lysine tRNA (Cat.# L5061). The results of this experiment, depicted in Figure 10 demonstrate that both colorimetric and chemiluminescent non-radioactive detection using Transcend™ tRNA can detect protein produced from as little as 10ng luciferase template DNA. As luciferase contains numerous lysine residues, proteins with fewer lysine residues will possibly exhibit less sensitive detection when using these non-radioactive detection methods. 

Canine Pancreatic Microsomal Membranes (CMMs)

The compatibility of Canine Pancreatic Microsomal Membranes* (Cat.# Y4041) with the TNT® T7 Quick for PCR DNA system was investigated using the b-lactamase and a-mating factor Control RNAs, which are included with the CMMs (Cat.# Y4061, Y4071). Both RNAs were expressed in this system and processed as expected (Figure 11). The 31kDa b-lactamase protein undergoes signal peptide cleavage to 28kDa, while the 18kDa a-mating factor protein is N-glycosylated to 30kDa.

*Products may be covered by pending or issued patents. Please visit our patent and trademark web page for more information.

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Figure 10

Figure 10. Titration of linearized luciferase plasmid DNA into TNT® T7 Quick for PCR DNA using Transcend™ Biotinylated Lysine tRNA incorporation. 

 
Figure 11

Figure 11. Expression and processing of b-lactamase and a-mating factor RNAs in TNT® T7 Quick for PCR DNA in the presence or absence of CMMs.