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last updated: January 14, 2020
Nat holds a PhD in Biology from the University of Missouri-Columbia and is currently Lead in Molecular Biology at Pairwise.
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Buying competent cells from commercial suppliers is convenient, provides a guarantee of quality, and gives access to strains with a variety of in-built traits that assist with things like maintenance of plasmid integrity (more on these traits later). However, this can be an expensive business. Alternatively, competent cells of any strain, including the specially-constructed commercial…
One of the most crucial steps in any cloning procedure is the preparation of the vector. Get it wrong and your chances of success will be drastically reduced. The overall aim for a good vector preparation is to obtain a fairly concentrated stock of undamaged, fully digested plasmid DNA that is free from contaminants. Missing…
The Basic Local Alignment Search Tool (BLAST) algorithm is at the heart of a free suite of online resources available through the National Center for Biotechnology Information (NCBI). While most researchers are aware of BLAST as a sequence alignment tool, NCBI’s BLAST suite offers so much more! I’ll cover in-depth how to use these resources…
After ligation, the method you use for desalting your sample prior to electroporation is critical, especially if your ligation is inefficient, according to a study by Schlaak et al [1]. Under standard electroporation conditions, the electric field of 12-18 kV/cm generated in a 0.1mm-gap electroporation cuvette means that the conductivity of the sample must be…
While the classic approach to molecular cloning – using restriction enzymes to excise a DNA fragment of interest – is as useful as ever, new techniques that make cloning faster, easier and more versatile are available. As a smart molecular biologist, you should be examining each of them to see whether or not adding them…
Genetic variants are critical to fields like evolution, diagnostics, and medicine—but they’re complex. This article breaks them down.
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