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Phage display is also a widely used method for in vitro protein evolution (also called protein engineering). As such, phage display is a useful tool in drug discovery. It is used for finding new ligands (enzyme inhibitors, receptor agonists and antagonists) to target proteins.
Phage Display: A Laboratory Manual. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY. OCLC 43903550, ISBN 0-87969-740-7; Birge, E. A. 2000. Bacterial and Bacteriophage Genetics. Springer-Verlag, New York. OCLC 41273243, ISBN 0-387-23919-7; Stahl, F. W. 2000. We Can Sleep Later: Alfred D. Hershey and the Origins of Molecular Biology.
Later improvements of antibody phage display technology enables the display of millions of different antibody fragments on the surface of filamentous phage (better known as antibody phage library) and subsequent selection of highly specific recombinant antibodies to any given target. This technology is widely exploited in pharmaceutical ...
Phage display methods are one option for screening proteins. This method involves the fusion of genes encoding the variant polypeptides with phage coat protein genes. Protein variants expressed on phage surfaces are selected by binding with immobilized targets in vitro.
The 'helper' phage infects the bacterial host by first attaching to the host cell's pilus and then, after attachment, transporting the phage genome into the cytoplasm of the host cell. Inside the cell, the phage genome triggers production of single stranded phagemid DNA in the cytoplasm. This phagemid DNA is then packaged into phage particles.
Protein methods are the techniques used to study proteins.There are experimental methods for studying proteins (e.g., for detecting proteins, for isolating and purifying proteins, and for characterizing the structure and function of proteins, [1] often requiring that the protein first be purified).
The resulting phage particles that are produced contain the single-stranded phagemids and are used to infect XL-1 Blue cells. [2] The double-stranded phagemids are subsequently collected from these XL-1 Blue cells, essentially reversing the process used to produce the original library phage.
Picture of an SDS-PAGE. The molecular markers (ladder) are in the left lane. Polyacrylamide gel electrophoresis (PAGE) is a technique widely used in biochemistry, forensic chemistry, genetics, molecular biology and biotechnology to separate biological macromolecules, usually proteins or nucleic acids, according to their electrophoretic mobility.