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Turn it on? Turn it off? Turn it down, but not forever? You don’t need to resort to the force to control protein expression in mammalian cells: easy to use biological tools are abundant! In this post, we will review tried-and-true protein expression control tools as well as ...
What are Acoustic Reporter Genes (ARGs)? Fluorescent and bioluminescent reporter genes are widely used to study gene expression in cells. But these reporters have limited use in vivo because they are based on light which is very easily scattered by tissue. Ultrasound, on the ...
When performing restriction digests on plasmids at Addgene, we sometimes observe something odd in our uncut DNA control: a band or two appear on an agarose gel at notably higher molecular weights than expected, given the size of the plasmid. This is seen only in the uncut DNA; ...
Promoters control the binding of RNA polymerase and transcription factors. Since the promoter region drives transcription of a target gene, it therefore determines the timing of gene expression and largely defines the amount of recombinant protein that will be produced. Many ...
In a lab, you may have heard the phrase gram negative or positive being used to describe a species of bacteria, but what does it actually mean? What relevance does it have on the structure of a bacteria species and how it can be used in a lab? Here we’ll be talking about the ins ...
FLIS and Flies Drosophila, more commonly known as fruit flies, have been an important animal model for research, particularly genetics research, for decades. Its short life cycle, reasonably close genetic homology to humans, and small size have allowed scientists to use it as a ...
Selectable transgene markers for plant transformation fall into two main categories: antibiotic/herbicide resistance and fluorescent proteins. Selection using resistance genes usually involves killing the untransformed seedlings or callus (undifferentiated plant cell culture), ...
