What Is a Plasmid?

anyasabanayagam

Jan 25

1 min read

What if scientists could give a cell a tiny set of genetic instructions?

A plasmid is a small, circular piece of DNA that exists separately from a cell’s chromosomes. Scientists can design plasmids to carry specific genes and use them as tools to introduce those genes into cells. Once inside, the cell can use its normal gene-expression machinery to read the DNA, make mRNA, and ultimately produce the corresponding protein.

Plasmids are incredibly useful in biotechnology because they let researchers study individual proteins and test how cells respond to them. In our project, plasmids carried genes for proteins involved in the TLR4 signaling system, allowing us to investigate whether those proteins could help cells respond to PGL.

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