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Protein Production
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Protein expression, production, and purification play pivotal roles in drug discovery, serving as essential steps in the development of biopharmaceuticals. Protein expression involves the synthesis of a target protein in a host organism, commonly using recombinant DNA technology. This process allows researchers to introduce the gene encoding the desired protein into a host cell, such as bacteria, yeast, or mammalian cells, to harness their molecular machinery for protein synthesis.
Expressions Systems
The choice of expression system depends on factors such as protein complexity, post-translational modifications, and the intended application of the drug. By manipulating these host cells, scientists can optimise the yield, folding, and functionality of the target protein.
Following protein expression, the next critical step is production, which entails the cultivation of the host cells at a large scale to generate sufficient quantities of the recombinant protein. This phase involves optimising growth conditions, media composition, and other parameters to maximise protein yield while maintaining product quality. Subsequently, the harvested cell culture undergoes purification, a crucial process to isolate the target protein from other cellular components. Purification methods often involve chromatographic techniques, such as affinity chromatography, ion-exchange chromatography, and size-exclusion chromatography, which exploit differences in the physicochemical properties of proteins. These sophisticated processes ensure the production of highly pure and bioactive proteins, laying the groundwork for the development of safe and effective therapeutic agents in drug discovery.
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