• Review available recombinant DNA and protein technology
• Review what vectors are available to carry and express a gene of interest
• Discuss what benefits the different expression systems have
Protein Expression systems
Therapeutic Proteins
Learning Aims
Review available recombinant DNA and protein technology
Review what vectors are available to carry and express a gene of interest
Discuss what benefits the different expression systems have
Learning Outcomes
Be able to consider and evaluate the questions that should be asked when deciding
on a suitable expression system
Outline the advantages and disadvantages of the following expression systems
1. Prokaryotes (eg., E Coli)
2. Methylotrophic and other yeasts
3. Insects
4. Mammalian cell-cultures
5. Transgenic animal / Transgenic plants
Why protein Expression and purification?
A. Basic scientific applications
B. Therapeutic p roteins
Expression systems
BioPharma industry is dependent on;
recombinant protein expression
high levels of expression
reproducible quality
This will allow;
production of sufficient protein
analysis and better understanding of protein products
research and development of new therapeutics
DNA cloning
, Expression Vector features
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