Extremely Convenient DNA Polymerase Master Mix From ThermoFisher

The Scripps Research Institute
Immunology Microbiology
Postdoctoral Researcher

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Company:

Thermo Scientific

Product Name:

DreamTaq™ Hot Start Green PCR Master Mix by Thermo Scientific

Catalog Number:

K9021

I conducted research on a peptidoglycan (PG) hydrolytic enzyme and demonstrated its unusual substrate specificity. This enzyme contributes to the PG sacculus expansion, highlighting the crucial role of cross-link cleavage in bacterial PG synthesis. Additionally, I explored the physiological function of orthologs from two model organisms, Caulobacter crescentus and Klebsiella pneumoniae. To achieve this, I cloned the orthologs from these bacteria under an IPTG-inducible promoter in the pTRC99a physiological vector. For the identification of positive clones, I extensively utilized the DreamTaq™ Hot Start Green PCR Master Mix to screen numerous colonies.

Experimental Design and Results Summary

Application

Screening colonies for positive clones.

Starting Material

E. coli cells

Tips

For colony PCR, dissolve a colony in 20 µl of water (making it viscous), and use 1 µl as a template for a successful PCR reaction.

Results Summary

Using this kit, I identified numerous positive clones encoding cell wall hydrolase orthologs, which I subsequently utilized to assess the extent of complementation in the E. coli cell wall hydrolase mutant. I demonstrated that orthologs from various bacteria effectively complement the growth defects observed in the E. coli mutant lacking its cell wall hydrolase.

DOI or PMID #

30940749

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Summary

The Good

Simple yet robust!

The Bad

None.

The Bottom Line

Great product. I would definitely purchase this again. The perfect companion for bacterial geneticists.

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