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Pharma Tech Outlook | Thursday, April 29, 2021
Phage Display Libraries (PDLs), which were first developed in 1985, may be the most significant phage contribution to biotechnology. PDL involves inserting a gene encoding a protein of interest into a phage coat protein gene, allowing the phage to ‘display’ the protein on its surface.
FREMONT, CA:The use of biological organisms in technical processes is known as biotechnology. While it was not named “biotechnology” until the twentieth century, it is almost as old as civilization itself. People are developing new applications for biological organisms in the twenty-first century rather than abandoning it. A few examples include:
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Milk Products
Fermenting milk with microorganisms is as old as domesticating herd animals in the Fertile Crescent, which started about 14,000 years ago. Lactobacillus ferments milk, although certain cheeses, such as blue cheese, are made with fungi (Penicillium). Similarly, some dessert wines are made from the fungus Botrytis cinerea’s ‘noble rot.’
Since it used recombinant DNA technology instead of conventional selection methods, protein development in E.coli was a new stage of biotechnology. Insulin was the first human protein developed in E. coli in 1978, followed by human growth hormones.
Phage Display Libraries
Bacteriophages are considered to be the origins of molecular biology. Apart from discovering restriction enzymes, T4 ligase, the enzyme that joins the ends of recombinant DNA molecules, is also a bacteriophage product. Phage Display Libraries (PDLs), which were first developed in 1985, may be the most significant phage contribution to biotechnology.PDL involves inserting a gene encoding a protein of interest into a phage coat protein gene, allowing the phage to ‘display’ the protein on its surface. Protein-protein, protein-peptide, and protein–DNA interactions are studied using PDLs. PDLs are helpful in the development of vaccines and drugs.
Agrobacterium Tumefaciens
Green biotechnology is a form of biotechnology that involves genetically modifying plants. It is based on a clever trick by the Agrobacterium tumefaciens microbe. It has a plasmid called Ti that allows it to pass some of its genes into the plant genome. Only T-DNA border sequences are needed for the transition, and foreign DNA can be inserted between them to be incorporated and expressed in the plant genome. This approach was used to modify a variety of cereal crop plants, as well as HeLa cells.
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