期刊
ANALYTICAL BIOCHEMISTRY
卷 396, 期 1, 页码 155-157出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ab.2009.08.026
关键词
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A phage display-based bifunctional display system was developed for simple and sensitive immunoassay. The resulting bifunctional phage could simultaneously display a few single-chain variable fragment (ScFv) and many copies of the gold-binding peptide on its surface, thereby mediating antigen recognition and signal amplification. As a demonstration study, it was possible for bifunctional phage-based immunoassay to identify Bacillus anthracis spores from other Bacillus strains with detection sensitivity 10-fold higher than that of conventional phage enzyme-linked immunosorbent assay (ELISA). This protocol may be applied to build other bifunctional phage clones for broad applications (e.g., immunoassay kits, affinity biosensors, biorecognition assays). (C) 2009 Elsevier Inc. All rights reserved.
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