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Making chemistry selectable by linking it to infectivity

By Changshou Gao, Chao-Hsiung Lin, Chih-Hung L. Lo, Shenlan Mao, Peter Wirsching, Richard A. Lerner and Kim D. Janda


The link between recognition and replication is fundamental to the operation of the immune system. In recent years, modeling this process in a format of phage-display combinatorial libraries has afforded a powerful tool for obtaining valuable antibodies. However, the ability to readily select and isolate rare catalysts would expand the scope of library technology. A technique in which phage infection controlled the link between recognition and replication was applied to show that chemistry is a selectable process. An antibody that operated by covalent catalysis to form an acyl intermediate restored phage infectivity and allowed selection from a library in which the catalyst constituted 1 in 105 members. Three different selection approaches were examined for their convenience and generality. Incorporating these protocols together with well known affinity labels and mechanism-based inactivators should allow the procurement of a wide range of novel catalytic antibodies

Topics: Physical Sciences
Publisher: The National Academy of Sciences of the USA
Year: 1997
OAI identifier: oai:pubmedcentral.nih.gov:23570
Provided by: PubMed Central
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